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Substituted tryptamine

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Substituted tryptamines, or simply tryptamines, also known as serotonin analogues (i.e., 5-hydroxytryptamine analogues), are organic compounds which may be thought of as being derived from tryptamine itself. The molecular structures of all tryptamines contain an indole ring, joined to an amino (NH2) group via an ethyl (−CH2–CH2−) sidechain. In substituted tryptamines, the indole ring, sidechain, and/or amino group are modified by substituting another group for one of the hydrogen (H) atoms.

The structure of substituted tryptamines. Tryptamine itself is obtained when R4=R5=RN1=RN2=Rα = H.
The structure of substituted tryptamines with all positions labeled.

Well-known tryptamines include serotonin, an important neurotransmitter, and melatonin, a hormone involved in regulating the sleep-wake cycle. Tryptamine alkaloids are found in fungi, plants and animals; and sometimes used by humans for the neurological or psychotropic effects of the substance. Prominent examples of tryptamine alkaloids include psilocybin (from "psilocybin mushrooms") and DMT. In South America, dimethyltryptamine is obtained from numerous plant sources, like chacruna, and it is often used in ayahuasca brews. Many synthetic tryptamines have also been made, including the migraine drug sumatriptan, and psychedelic drugs. A 2022 study has found the variety of tryptamines present in wild mushrooms may affect the therapeutic impact.[1]

The tryptamine structure, in particular its indole ring, may be part of the structure of some more complex compounds, for example: LSD, ibogaine, mitragynine and yohimbine. A thorough investigation of dozens of tryptamine compounds was published by Ann and Alexander Shulgin under the title TiHKAL.

List of substituted tryptamines

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Selected tryptamines
Chemical structure Short Name Origin Ring Substitution RN1 RN2 Full Name CAS Number
  Tryptamine Animals, plants, fungi H H H 3-(2-aminoethyl)indole / 2-(1H-indol-3-yl)ethanamine 61-54-1
  NMT Plants H H CH3 N-methyltryptamine 61-49-4
  2-HO-NMT Plants 2-OH H CH3 2-hydroxy-N-methyltryptamine 106987-89-7
  5-MeO-NMT Plants 5-OCH3 H CH3 5-methoxy-N-methyltryptamine 2009-03-2
  Serotonin Animals, plants 5-OH H H 5-hydroxytryptamine 50-67-9
  Nω-Methylserotonin (norbufotenin) Plants 5-OH H CH3 5-hydroxy-N-methyltryptamine 1134-01-6
  Bufotenin Animals, plants, fungi 5-OH CH3 CH3 5-hydroxy-N,N-dimethyltryptamine 487-93-4
  Bufotenidine Amphibians 5-O− (CH3)3 3-[2-(trimethylazaniumyl)ethyl]-1H-indol-5-olate 487-91-2
  Melatonin Animals, plants, microbes 5-OCH3 H O=C-CH3 5-methoxy-N-acetyltryptamine 73-31-4
  N-Acetylserotonin Animals 5-OH H O=C-CH3 5-hydroxy-N-acetyltryptamine 1210-83-9
  6-Hydroxymelatonin Animals 5-OCH3, 6-OH H O=C-CH3 N-[2-(6-Hydroxy-5-methoxy-1H-indol-3-yl)ethyl]acetamide 2208-41-5
  4-HO-NMT Fungi 4-OH H CH3 4-hydroxy-N-methyltryptamine 28363-70-4
  Psilocin Fungi 4-OH CH3 CH3 4-hydroxy-N,N-dimethyltryptamine 520-53-6
  Norbaeocystin Fungi 4-OPO3H2 H H 4-phosphoryloxy-tryptamine 21420-59-7
  Baeocystin Fungi 4-OPO3H2 H CH3 4-phosphoryloxy-N-methyl-tryptamine 21420-58-6
  Psilocybin Fungi 4-OPO3H2 CH3 CH3 4-phosphoryloxy-N,N-dimethyltryptamine 520-52-5
  Aeruginascin Fungi 4-OPO3H2 (CH3)3 [3-[2-(trimethylazaniumyl)ethyl]-1H-indol-4-yl] hydrogen phosphate 114264-95-8
  DMT Animals, plants H CH3 CH3 N,N-dimethyltryptamine 61-50-7
  Lespedamine Plants 1-OCH3 CH3 CH3 1-methoxy-N,N-dimethyltryptamine 4335-93-7
  5-MeO-DMT Animals, plants 5-OCH3 CH3 CH3 5-methoxy-N,N-dimethyltryptamine 1019-45-0
  5-Bromo-DMT Marine sponges, invertebrates 5-Br CH3 CH3 5-bromo-N,N-dimethyltryptamine 17274-65-6
  6-Bromotryptamine Marine invertebrates 6-Br H H 6-bromotryptamine 96624-18-9
  5,6-Dibromotryptamine Marine invertebrates 5,6-Br H H 5,6-dibromotryptamine
  5,6-Dibromo-NMT Marine invertebrates 5,6-Br H CH3 5,6-dibromo-N-methyltryptamine
  5,6-Dibromo-DMT Marine sponges, invertebrates 5,6-Br CH3 CH3 5,6-dibromo-N,N-dimethyltryptamine 72853-80-6
  Desformylflustrabromine Marine invertebrates 2-(α,α-dimethylallyl), 6-Br H CH3 2-[6-bromo-2-(2-methylbut-3-en-2-yl)-1H-indol-3-yl]-N-methylethanamine 474657-72-2
  Convolutindole A Marine invertebrates 2,4,6-Br, 1,7-OCH3 CH3 CH3 1,7-dimethoxy-2,4,6-tribromo-N,N-dimethyltryptamine 443356-86-3
  Acetryptine artificial 5-COCH3 H H 5-Acetyltryptamine 3551-18-6
  5-BT artificial 5-OCH2C6H5 H H 5-Benzyloxytryptamine 20776-45-8
  5-CT artificial 5-CONH2 H H 5-Carboxamidotryptamine 74885-09-9
  5-(Nonyloxy)tryptamine artificial 5-O(CH2)8CH3 H H 5-nonyloxytryptamine 157798-12-4
  2-Methyl-5-hydroxytryptamine artificial 2-CH3, 5-OH H H 3-(2-aminoethyl)-2-methyl-1H-indol-5-ol 78263-90-8
  NET artificial H H CH2CH3 N-ethyltryptamine 61-53-0
  NiPT artificial H H CH(CH3)2 N-isopropyltryptamine 14121-10-9
  NcPT artificial H H C3H5 N-cyclopropyltryptamine
  NSBT artificial H H CH(CH3)CH2CH3 N-sec-butyltryptamine
  NTBT artificial H H C(CH3)3 N-[2-(1H-indol-3-yl)ethyl]-2-methylpropan-2-amine
  5-MeO-T-NBOMe artificial 5-OCH3 H CH2C6H4(o-OCH3) 5-methoxy-N-(ortho-methoxybenzyl)tryptamine 1335331-37-7
  5-MT-NB3OMe [2] artificial 5-OCH3 H CH2C6H4(m-OCH3) 5-methoxy-N-(meta-methoxybenzyl)tryptamine 1648553-42-7
  5-MeO-NBpBrT artificial 5-OCH3 H CH2C6H4(p-Br) N-(4-Bromobenzyl)-2-(5-methoxy-1H-indol-3-yl)ethanamine 155639-13-7
  5-MeO-34MPEMT [3] artificial 5-OCH3 CH3 CH2CH2C6H3(p,m-OCH3) N-methyl-N-[2-(3,4-dimethoxyphenyl)ethyl]-2-(5-methoxy-1H-indol-3-yl)ethanamine
  Idalopirdine artificial 6-F H CH2C6H4(m-OCH2CF2CF2H) 2-(6-Fluoro-1H-indol-3-yl)-N-(3-(2,2,3,3-tetrafluoropropoxy)benzyl)ethanamine 467459-31-0
  Z2876442907[4] artificial 4-CH3 H CH2(C3HNS)COOCH2CH3 ethyl 2-({[2-(4-methyl-1H-indol-3-yl)ethyl]amino}methyl)-1,3-thiazole-5-carboxylate
  Pyr-T artificial H (CH2)4 3-[2-(Pyrrolidin-1-yl)ethyl]-1H-indole 14008-96-9
  4-HO-pyr-T artificial 4-OH (CH2)4 3-[2-(Pyrrolidin-1-yl)ethyl]-1H-indol-4-ol 63097-26-7
  5-MeO-pyr-T artificial 5-OCH3 (CH2)4 5-Methoxy-3-[2-(pyrrolidin-1-yl)ethyl]-1H-indole 3949-14-2
  Indolylethylfentanyl artificial H (CH2)5-4-N(COCH2CH3)C6H5 N-[1-[2-(1H-indol-3-yl)ethyl]piperidin-4-yl]-N-phenylpropanamide 58399-46-5
  MET artificial H CH3 CH2CH3 N-Methyl-N-ethyltryptamine 5599-69-9
  MPT artificial H CH3 CH2CH2CH3 N-Methyl-N-propyltryptamine 850032-72-3
  MiPT artificial H CH3 CH(CH3)2 N-Methyl-N-isopropyltryptamine 96096-52-5
  McPT artificial H CH3 C3H5 N-Methyl-N-cyclopropyltryptamine 1373918-63-8
  EcPT artificial H CH2CH3 C3H5 N-ethyl-N-cyclopropyltryptamine
  PcPT artificial H CH2CH2CH3 C3H5 N-propyl-N-cyclopropyltryptamine
  iPcPT artificial H CH(CH3)2 C3H5 N-isopropyl-N-cyclopropyltryptamine
  DcPT artificial H C3H5 C3H5 N,N-dicyclopropyltryptamine 1373918-62-7
  MBT artificial H CH3 (CH2)3CH3 N-Methyl-N-butyltryptamine 848130-12-1
  MSBT artificial H CH3 CH(CH3)CH2CH3 N-Methyl-N-sec-butyltryptamine
  MiBT artificial H CH3 CH2CH(CH3)2 N-Methyl-N-iso-butyltryptamine
  McPMT artificial H CH3 CH2C3H5 N-Methyl-N-(cyclopropylmethyl)tryptamine
  DET artificial H CH2CH3 CH2CH3 N,N-diethyltryptamine 61-51-8
  EPT artificial H CH2CH3 CH2CH2CH3 N-Ethyl-N-propyltryptamine 850032-68-7
  EiPT artificial H CH2CH3 CH(CH3)2 N-Ethyl-N-isopropyltryptamine 848130-11-0
  DPT artificial H CH2CH2CH3 CH2CH2CH3 N,N-dipropyltryptamine 61-52-9
  PiPT artificial H CH2CH2CH3 CH(CH3)2 N-Propyl-N-isopropyltryptamine 1354632-00-0
  DiPT artificial H CH(CH3)2 CH(CH3)2 N,N-diisopropyltryptamine 14780-24-6
  EBT artificial H CH2CH3 (CH2)3CH3 N-ethyl-N-butyltryptamine
  PBT artificial H CH2CH2CH3 (CH2)3CH3 N-propyl-N-butyltryptamine
  iPsBT artificial H CH(CH3)2 CH(CH3)CH2CH3 N-isopropyl-N-sec-butyltryptamine
  DBT artificial H (CH2)3CH3 (CH2)3CH3 N,N-dibutyltryptamine 15741-77-2
  DIBT artificial H CH2CH(CH3)2 CH2CH(CH3)2 N,N-diisobutyltryptamine 63938-64-7
  DSBT artificial H CH(CH3)CH2CH3 CH(CH3)CH2CH3 N,N-disecbutyltryptamine
  MALT artificial H CH3 H2C=CH-CH2 N-methyl-N-allyltryptamine 1366416-29-6
  DALT artificial H H2C=CH-CH2 H2C=CH-CH2 N,N-diallyltryptamine 60676-77-9
  ALiPT artificial H H2C=CH-CH2 CH(CH3)2 N-allyl-N-isopropyltryptamine
  2-Methyl-DMT artificial 2-CH3 CH3 CH3 (2-(2-methyl-1H-indol-3-yl)-1-methyl-ethyl)dimethylamine 1080-95-1
  2-Me-DET artificial 2-CH3 CH2CH3 CH2CH3 N,N-Diethyl-2-(2-methyl-1H-indol-3-yl)ethan-1-amine 26628-88-6
  4-Amino-DMT [5] artificial 4-NH2 CH3 CH3 4-amino-N,N-dimethyltryptamine 60331-61-5
  4-Methyl-DMT artificial 4-CH3 CH3 CH3 4,N,N-trimethyltryptamine 28289-23-8
  4-MeO-DMT artificial 4-OCH3 CH3 CH3 4-methoxy-N,N-dimethyltryptamine 3965-97-7
  4-MeO-MiPT artificial 4-OCH3 CH3 CH(CH3)2 4-methoxy-N-methyl-N-isopropyltryptamine 96096-53-6
  4-MeO-DiPT artificial 4-OCH3 CH(CH3)2 CH(CH3)2 4-methoxy-N,N-diisopropyltryptamine
  4-AcO-DMT artificial 4-OCOCH3 CH3 CH3 4-acetoxy-N,N-dimethyltryptamine 92292-84-7
  4-PrO-DMT artificial 4-OCOCH2CH3 CH3 CH3 4-propionyloxy-N,N-dimethyltryptamine 1373882-11-1
  4-HO-MET artificial 4-OH CH3 CH2CH3 4-hydroxy-N-methyl-N-ethyltryptamine 77872-41-4
  4-Acetoxy-MET artificial 4-OCOCH3 CH3 CH2CH3 4-acetoxy-N-methyl-N-ethyltryptamine 1445751-40-5
  4-PO-MET artificial 4-OPO3H2 CH3 CH2CH3 4-phosphoryloxy-N-methyl-N-ethyltryptamine
  4-HO-DET artificial 4-OH CH2CH3 CH2CH3 4-hydroxy-N,N-diethyltryptamine 22204-89-3
  4-Acetoxy-DET artificial 4-OCOCH3 CH2CH3 CH2CH3 4-acetoxy-N,N-diethyltryptamine 1135424-15-5
  4-PO-DET artificial 4-OPO3H2 CH2CH3 CH2CH3 4-phosphoryloxy-N,N-diethyltryptamine 60480-02-6
  4-HO-EPT artificial 4-OH CH2CH3 CH2CH2CH3 4-hydroxy-N-ethyl-N-propyltryptamine 2595431-59-5
  4-PO-EPT artificial 4-OPO3H2 CH2CH3 CH2CH2CH3 4-phosphoryloxy-N-ethyl-N-propyltryptamine
  4-AcO-EiPT artificial 4-OCOCH3 CH2CH3 CH(CH3)2 4-acetoxy-N-ethyl-N-isopropyltryptamine
  4-HO-MPT artificial 4-OH CH3 CH2CH2CH3 4-hydroxy-N-methyl-N-propyltryptamine 763035-03-6
  4-HO-MiPT artificial 4-OH CH(CH3)2 CH3 4-hydroxy-N-isopropyl-N-methyltryptamine 77872-43-6
  4-Acetoxy-MiPT artificial 4-OCOCH3 CH3 CH(CH3)2 4-acetoxy-N-methyl-N-isopropyltryptamine 1024612-25-6
  4-HO-MALT[6] artificial 4-OH CH3 H2C=CH-CH2 4-hydroxy-N-Methyl-N-allyltryptamine
  4-AcO-MALT[7] artificial 4-OCOCH3 CH3 H2C=CH-CH2 4-acetoxy-N-Methyl-N-allyltryptamine
  4-HO-NALT[8] artificial 4-OH H H2C=CH-CH2 4-hydroxy-N-allyltryptamine
  4-HO-MSBT artificial 4-OH CH(CH3)CH2CH3 CH3 4-hydroxy-N-sec-butyl-N-methyltryptamine
  4-HO-EiBT artificial[9] 4-OH CH2CH(CH3)2 CH2CH3 4-hydroxy-N-iso-butyl-N-ethyltryptamine
  4-HO-McPT artificial 4-OH C3H5 CH3 4-hydroxy-N-cyclopropyl-N-methyltryptamine 2883663-05-4
  4-HO-McPeT artificial 4-OH C5H9 CH3 4-hydroxy-N-cyclopentyl-N-methyltryptamine 77872-48-1
  4-HO-McPMT [10] artificial 4-OH CH2C3H5 CH3 4-hydroxy-N-cyclopropylmethyl-N-methyltryptamine
  4-HO-DPT artificial 4-OH CH2CH2CH3 CH2CH2CH3 4-hydroxy-N,N-dipropyltryptamine 63065-88-3
  4-AcO-DPT artificial 4-OCOCH3 CH2CH2CH3 CH2CH2CH3 4-acetoxy-N,N-dipropyltryptamine 1445751-75-6
  4-HO-PiPT artificial 4-OH CH2CH2CH3 CH(CH3)2 4-hydroxy-N-propyl-N-isopropyltryptamine
  4-AcO-PiPT artificial 4-OCOCH3 CH2CH2CH3 CH(CH3)2 4-acetoxy-N-propyl-N-isopropyltryptamine
  4-HO-DIPT artificial 4-OH CH(CH3)2 CH(CH3)2 4-hydroxy-N,N-diisopropyltryptamine 132328-45-1
  4-Acetoxy-DiPT artificial 4-OCOCH3 CH(CH3)2 CH(CH3)2 4-acetoxy-N,N-diisopropyltryptamine 936015-60-0
  4-PrO-DiPT artificial 4-OCOCH2CH3 CH(CH3)2 CH(CH3)2 4-propionyloxy-N,N-diisopropyltryptamine 1373882-13-3
  FT-104 artificial 4-OCO(CH2)3COOH CH(CH3)2 CH(CH3)2 4-glutaryloxy-N,N-diisopropyltryptamine
  4-PO-DiPT artificial 4-OPO3H2 CH(CH3)2 CH(CH3)2 4-phosphoryloxy-N,N-diisopropyltryptamine 1373882-09-7
  4-HO-DALT artificial 4-OH H2C=CH-CH2 H2C=CH-CH2 4-hydroxy-N,N-diallyltryptamine
  4-AcO-DALT artificial 4-OCOCH3 H2C=CH-CH2 H2C=CH-CH2 4-acetoxy-N,N-diallyltryptamine 1445751-71-2
  4-HO-DBT artificial 4-OH (CH2)3CH3 (CH2)3CH3 4-hydroxy-N,N-dibutyltryptamine 63065-89-4
  4-HO-DIBT artificial 4-OH CH2CH(CH3)2 CH2CH(CH3)2 4-hydroxy-N,N-diisobutyltryptamine
  4-HO-DSBT artificial 4-OH CH(CH3)CH2CH3 CH(CH3)CH2CH3 4-hydroxy-N,N-disecbutyltryptamine 127507-01-1
  5-MeO-MET artificial 5-OCH3 CH2CH3 CH3 5-methoxy-N-Methyl-N-ethyltryptamine 16977-53-0
  5-MeO-DET artificial 5-OCH3 CH2CH3 CH2CH3 5-methoxy-N,N-diethyltryptamine 2454-70-8
  5-MeO-MPT artificial 5-OCH3 CH3 CH2CH2CH3 5-methoxy-N-methyl-N-propyltryptamine
  5-MeO-EPT artificial 5-OCH3 CH2CH3 CH2CH2CH3 5-methoxy-N-ethyl-N-propyltryptamine 850032-67-6
  5-MeO-DPT artificial 5-OCH3 CH2CH2CH3 CH2CH2CH3 5-methoxy-N,N-dipropyltryptamine 69496-75-9
  5-MeO-MALT artificial 5-OCH3 H2C=CH-CH2 CH3 5-methoxy-N-Methyl-N-allyltryptamine 1373918-64-9
  5-MeO-DALT artificial 5-OCH3 H2C=CH-CH2 H2C=CH-CH2 5-methoxy-N,N-diallyltryptamine 928822-98-4
  5-MeO-ALiPT artificial 5-OCH3 H2C=CH-CH2 CH2CH(CH3)2 5-methoxy-N-allyl-N-isopropyltryptamine
  5-MeO-MiPT artificial 5-OCH3 CH3 CH(CH3)2 5-methoxy-N,N-methylisopropyltryptamine 96096-55-8
  5,6-MeO-MiPT artificial 5-OCH3, 6-OCH3 CH3 CH(CH3)2 5,6-dimethoxy-N,N-methylisopropyltryptamine
  5-MeO-McPT artificial 5-OCH3 CH3 C3H5 5-methoxy-N-methyl-N-cyclopropyltryptamine
  5-MeO-McBT artificial 5-OCH3 CH3 C4H7 5-methoxy-N-methyl-N-cyclobutyltryptamine
  5-MeO-EiPT artificial 5-OCH3 CH2CH3 CH(CH3)2 5-methoxy-N-ethyl-N-isopropyltryptamine 850032-66-5
  5-MeO-PiPT artificial 5-OCH3 CH2CH2CH3 CH(CH3)2 5-methoxy-N-propyl-N-isopropyltryptamine
  5-MeO-DIPT artificial 5-OCH3 CH(CH3)2 CH(CH3)2 5-methoxy-N,N-diisopropyltryptamine 4021-34-5
  5-MeO-DBT artificial 5-OCH3 (CH2)3CH3 (CH2)3CH3 5-methoxy-N,N-dibutyltryptamine 73785-42-9
  5-MeO-DSBT artificial 5-OCH3 CH(CH3)CH2CH3 CH(CH3)CH2CH3 5-methoxy-N,N-di-sec-butyltryptamine
  5-MeS-DMT artificial 5-SCH3 CH3 CH3 5-methylthio-N,N-dimethyltryptamine 5102-11-4
  5-AcO-DMT artificial 5-OCOCH3 CH3 CH3 5-acetoxy-N,N-dimethyltryptamine 16977-50-7
  5-AcO-MET [11] artificial 5-OCOCH3 CH3 CH2CH3 5-acetoxy-N-methyl-N-ethyltryptamine
  5-AcO-DET artificial 5-OCOCH3 CH2CH3 CH2CH3 5-acetoxy-N,N-diethyltryptamine
  5-AcO-EPT [12] artificial 5-OCOCH3 CH2CH3 CH2CH2CH3 5-acetoxy-N-ethyl-N-propyltryptamine
  5-AcO-DPT artificial 5-OCOCH3 CH2CH2CH3 CH2CH2CH3 5-acetoxy-N,N-dipropyltryptamine
  5-AcO-MiPT artificial 5-OCOCH3 CH3 CH(CH3)2 5-acetoxy-N-methyl-N-isopropyltryptamine
  5-AcO-DiPT artificial 5-OCOCH3 CH(CH3)2 CH(CH3)2 5-acetoxy-N,N-diisopropyltryptamine
  5-Ethoxy-DMT artificial 5-OCH2CH3 CH3 CH3 5-ethoxy-N,N-dimethyltryptamine 855245-09-9
  5-Ethoxy-MET artificial 5-OCH2CH3 CH3 CH2CH3 5-ethoxy-N-methyl-N-ethyltryptamine
  5-Ethoxy-DET artificial 5-OCH2CH3 CH2CH3 CH2CH3 5-ethoxy-N,N-diethyltryptamine
  5-Ethoxy-MPT artificial 5-OCH2CH3 CH3 CH2CH2CH3 5-ethoxy-N-methyl-N-propyltryptamine
  5-Ethoxy-EPT artificial 5-OCH2CH3 CH2CH3 CH2CH2CH3 5-ethoxy-N-ethyl-N-propyltryptamine
  5-Ethoxy-DPT artificial 5-OCH2CH3 CH2CH2CH3 CH2CH3 5-ethoxy-N,N-dipropyltryptamine
  5-Ethoxy-MiPT artificial 5-OCH2CH3 CH3 CH(CH3)2 5-ethoxy-N-methyl-N-isopropyltryptamine
  5-Ethoxy-EiPT artificial 5-OCH2CH3 CH2CH3 CH(CH3)2 5-ethoxy-N-ethyl-N-isopropyltryptamine
  5-Ethoxy-DiPT artificial 5-OCH2CH3 CH(CH3)2 CH(CH3)2 5-ethoxy-N,N-diisopropyltryptamine
  5-Ethoxy-DALT artificial 5-OCH2CH3 H2C=CH-CH2 H2C=CH-CH2 5-ethoxy-N,N-diallyltryptamine
  5-BnO-DMT artificial 5-OCH2C6H5 CH3 CH3 5-benzyloxy-N,N-dimethyltryptamine 101832-88-6
  5-HO-DET artificial 5-OH CH2CH3 CH2CH3 5-hydroxy-N,N-diethyltryptamine 14009-42-8
  5-HO-DPT artificial 5-OH CH2CH2CH3 CH2CH2CH3 5-hydroxy-N,N-dipropyltryptamine 36288-75-2
  5-HO-MiPT artificial 5-OH CH3 CH(CH3)2 5-hydroxy-N-methyl-N-isopropyltryptamine
  5-HO-DiPT artificial 5-OH CH(CH3)2 CH(CH3)2 5-hydroxy-N,N-diisopropyltryptamine 36288-76-3
  5-Methyl-DMT (5,N,N-TMT) artificial 5-CH3 CH3 CH3 5,N,N-trimethyltryptamine 22120-39-4
  5-Ethyl-DMT artificial 5-CH2CH3 CH3 CH3 5-ethyl-N,N-dimethyltryptamine 171783-25-8
  5-Isopropyl-DMT artificial 5-CH(CH3)2 CH3 CH3 5-isopropyl-N,N-dimethyltryptamine 156281-04-8
  5-(t-Butyl)-DMT [13] artificial 5-C(CH3)3 CH3 CH3 5-(tert-butyl)-N,N-dimethyltryptamine
  5-Fluoro-DMT artificial 5-F CH3 CH3 5-fluoro-N,N-dimethyltryptamine 22120-36-1
  5-Fluoro-MET artificial 5-F CH3 CH2CH3 5-fluoro-N-methyl-N-ethyltryptamine
  5-Fluoro-DET artificial 5-F CH2CH3 CH2CH3 5-fluoro-N,N-diethyltryptamine
  5-Fluoro-EPT artificial 5-F CH2CH3 CH2CH2CH3 5-fluoro-N-ethyl-N-propyltryptamine
  5-Fluoro-DPT artificial 5-F CH2CH2CH3 CH2CH2CH3 5-fluoro-N,N-dipropyltryptamine
  5-Fluoro-PiPT artificial 5-F CH2CH2CH3 CH(CH3)2 5-fluoro-N-propyl-N-isopropyltryptamine
  5-Fluoro-PcBT artificial 5-F CH2CH2CH3 CH(CH2)3 5-fluoro-N-propyl-N-cyclobutyltryptamine
  5-Fluoro-iPcBT artificial 5-F CH(CH3)2 CH(CH2)3 5-fluoro-N-isopropyl-N-cyclobutyltryptamine
  5-Fluoro-DiPT artificial 5-F CH(CH3)2 CH(CH3)2 5-fluoro-N,N-diisoproptryptamine
  5-Fluoro-sBALT artificial 5-F CH(CH3)CH2CH3 CH2CH=CH2 5-fluoro-N-sec-butyl-N-allyltryptamine
  5-Fluoro-M1MALT artificial 5-F CH3 CH(CH3)CH=CH2 5-fluoro-N-methyl-N-(1-methylallyl)tryptamine
  5-Chloro-DMT artificial 5-Cl CH3 CH3 5-chloro-N,N-dimethyltryptamine 22120-32-7
  5-Iodo-DMT artificial 5-I CH3 CH3 5-iodo-N,N-dimethyltryptamine 22120-38-3
  5-TFM-DMT artificial 5-CF3 CH3 CH3 5-(trifluoromethyl)-N,N-dimethyltryptamine 2418713-32-1
  5-TFMO-DMT[14] artificial 5-OCF3 CH3 CH3 5-(trifluoromethoxy)-N,N-dimethyltryptamine
  5-Nitro-DMT[15] artificial 5-NO2 CH3 CH3 5-nitro-N,N-dimethyltryptamine 69937-13-9
  5-CN-DMT artificial 5-C≡N CH3 CH3 5-cyano-N,N-dimethyltryptamine 17380-42-6
  5-CN-DPT artificial 5-C≡N CH2CH2CH3 CH2CH2CH3 5-cyano-N,N-dipropyltryptamine 74885-19-1
  Almotriptan artificial 5-(CH2SO2N(CH2)4) CH3 CH3 N,N-dimethyl-2- [5-(pyrrolidin-1-ylsulfonylmethyl)- 1H-indol-3-yl]-ethanamine 154323-57-6
  Rizatriptan artificial 5-(CH2(N3(CH)2)) CH3 CH3 N,N-dimethyl-2-[5-(1H-1,2,4-triazol-1-ylmethyl)-1H-indol-3-yl]ethanamine 145202-66-0
  Sumatriptan artificial 5-(CH2SO2NHCH3) CH3 CH3 1-[3-(2-Dimethylaminoethyl)-1H-indol-5-yl]-N-methyl-methanesulfonamide 103628-46-2
  Zolmitriptan artificial 5-(CHNHC=OOCH2) CH3 CH3 5-( 4-(S)-1,3-oxazolidin-2-one)-N,N-dimethyltryptamine 139264-17-8
  6-Fluoro-DMT artificial 6-F CH3 CH3 6-fluoro-N,N-dimethyltryptamine 1511-31-5
  6-Fluoro-DET[16] artificial 6-F CH2CH3 CH2CH3 6-fluoro-N,N-diethyltryptamine 2836-69-3
  6-Chloro-DMT artificial 6-Cl CH3 CH3 6-chloro-N,N-dimethyltryptamine 25390-72-1
  6-Methyl-DMT artificial 6-CH3 CH3 CH3 6,N,N-trimethyltryptamine
  6-Hydroxy-DMT artificial 6-OH CH3 CH3 6-hydroxy-N,N-dimethyltryptamine 1476-33-1
  6-Hydroxy-DET artificial 6-OH CH3 CH3 6-hydroxy-N,N-diethyltryptamine 1476-59-1
  6-Methoxy-DMT artificial 6-OCH3 CH3 CH3 6-methoxy-N,N-dimethyltryptamine 2426-88-2
  7-Methyl-DMT artificial 7-CH3 CH3 CH3 7,N,N-trimethyltryptamine 65882-39-5
  7-Ethyl-DMT artificial 7-CH2CH3 CH3 CH3 7-ethyl-N,N-dimethyltryptamine
  7-Chloro-DMT artificial 7-Cl CH3 CH3 7-chloro-N,N-dimethyltryptamine
  7-Bromo-DMT[17] artificial 7-Br CH3 CH3 7-bromo-N,N-dimethyltryptamine 74798-68-8
  7-Methoxy-DMT artificial 7-OCH3 CH3 CH3 7-methoxy-N,N-dimethyltryptamine
  7-Methoxy-MiPT artificial 7-OCH3 CH3 CH(CH3)2 7-methoxy-N-methyl-N-isopropyltryptamine
  1-Methylpsilocin artificial 1-CH3, 4-OH CH3 CH3 1-Methyl-3-[2-(N,N-dimethylamino)ethyl]-4-hydroxyindole 1465-16-3
  1-Methyl-5-MeO-DiPT artificial 1-CH3, 5-OCH3 CH(CH3)2 CH(CH3)2 1-methyl-5-methoxy-N,N-diisopropyltryptamine 1373882-10-0
  NB-5-MeO-MiPT artificial 1-OCOC(CH3)3, 5-OCH3 CH3 CH(CH3)2 1-(t-butoxycarbonyl)-5-methoxy-N-methyl-N-isopropyltryptamine
  NB-5-MeO-DALT artificial 1-OCOC(CH3)3, 5-OCH3 H2C=CH-CH2 H2C=CH-CH2 1-(t-butoxycarbonyl)-5-methoxy-N,N-diallyltryptamine
  6-Fluoropsilocin artificial 4-OH,6-F CH3 CH3 4-hydroxy-6-fluoro-N,N-dimethyltryptamine 312314-12-8
  6-Fluoro-5-MeO-DMT artificial 5-OCH3,6-F CH3 CH3 5-methoxy-6-fluoro-N,N-dimethyltryptamine
  5,6-Difluoro-EPT artificial 5-F, 6-F CH2CH3 CH2CH2CH3 5,6-difluoro-N-ethyl-N-propyltryptamine
  5-MeO-2-TMT artificial 2-CH3, 5-OCH3 CH3 CH3 2-(5-methoxy-2-methyl-H-indol-3-yl)-N,N-dimethylethanamine 67292-68-6
  5-Methoxy-7,N,N-trimethyltryptamine artificial 5-OCH3, 7-CH3 CH3 CH3 5-Methoxy-7,N,N-trimethyltryptamine 61018-77-7
  5-Methoxy-4,N,N-trimethyltryptamine artificial 4-CH3, 5-OCH3 CH3 CH3 5-Methoxy-4,N,N-trimethyltryptamine
  4-HO-5-MeO-DMT artificial 4-OH, 5-OCH3 CH3 CH3 4-Hydroxy-5-methoxy-N,N-dimethyltryptamine 2433-31-0
  4-F-5-MeO-DMT artificial 4-F, 5-OCH3 CH3 CH3 4-Fluoro-5-Methoxy-N,N-dimethyltryptamine 312314-18-4
  5-methoxy-7-fluoro-MET artificial 5-OCH3, 7-F CH3 CH2CH3 5-Methoxy-7-Fluoro-N-methyl-N-ethyltryptamine
  EMDT artificial 2-CH2CH3, 5-OCH3 CH3 CH3 2-(2-ethyl-5-methoxy-1H-indol-3-yl)-N,N-dimethylethanamine 263744-72-5
  ST-1936 artificial 2-CH3, 5-Cl CH3 CH3 2-(2-methyl-5-chloro-1H-indol-3-yl)-N,N-dimethylethanamine 1210-81-7
  O-4310 artificial 1-CH(CH3)2, 4-OH, 6-F CH3 CH3 3-[2-(dimethylamino)ethyl]-6-fluoro-1-isopropyl-1H-indol-4-ol 885671-63-6
  CP-132,484 artificial 1-methyl-4,5-(OCH2CH2CH2) H H 1-(2-aminoethyl)-3-methyl-8,9-dihydropyrano(3,2-e)indole 143508-76-3
  4,5-DHP-DMT artificial 4,5-(OCH2CH2CH2) CH3 CH3 1-(2-dimethylaminoethyl)-8,9-dihydropyrano[3,2-e]indole 135360-97-3
  4,5-DHF-DMT (P-3) artificial[18] 4,5-(CH2CH2O) CH3 CH3 2-(3,6-dihydro-2H-furo[2,3-e]indol-8-yl)-N,N-dimethylethan-1-amine
  4,5-Methylbenzodioxole-DMT (P-131) artificial 4,5-(OC(CH3)=N) CH3 CH3 N,N-dimethyl-2-(2-methyl-6H-[1,3]oxazolo[4,5-e]indol-8-yl)ethan-1-amine
  4,5-MDO-DMT artificial 4,5-(OCH2O) CH3 CH3 2-(2H,6H-[1,3]Dioxolo[4,5-e]indol-8-yl)-N,N-dimethylethan-1-amine 81249-30-1
  4,5-MDO-DiPT artificial 4,5-(OCH2O) CH(CH3)2 CH(CH3)2 N-[2-(2H,6H-[1,3]Dioxolo[4,5-e]indol-8-yl)ethyl]-N-(propan-2-yl)propan-2-amine 82173-82-8
  5,6-FUR-DMT (P-4) artificial 5,6-(CH=CHO) CH3 CH3 2-(7H-furo[3,2-f]indol-5-yl)-N,N-dimethylethan-1-amine
  5,6-MDO-DMT artificial 5,6-(OCH2O) CH3 CH3 2-(2H,5H-[1,3]Dioxolo[4,5-f]indol-7-yl)-N,N-dimethylethan-1-amine
  5,6-MDO-MiPT artificial 5,6-(OCH2O) CH3 CH(CH3)2 N-[2-(2H,5H-[1,3]Dioxolo[4,5-f]indol-7-yl)ethyl]-N-methylpropan-2-amine
  5,6-MDO-DiPT artificial 5,6-(OCH2O) CH(CH3)2 CH(CH3)2 N-[2-(2H,5H-[1,3]Dioxolo[4,5-f]indol-7-yl)ethyl]-N-(propan-2-yl)propan-2-amine
Chemical Structure Short Name Origin Ring Substitution RN1 RN2 Full Name CAS Number

List of substituted α-alkyltryptamines

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α-Alkyltryptamines are a group of substituted tryptamines which possess an alkyl group, such as a methyl or ethyl group, attached at the alpha carbon, and in most cases no substitution on the amine nitrogen.[19][20][21] α-Alkylation of tryptamine makes it much more metabolically stable and resistant to degradation by monoamine oxidase, resulting in increased potency and greatly lengthened half-life.[21] This is analogous to α-methylation of phenethylamine into amphetamine.[21]

Many α-alkyltryptamines are drugs, acting as monoamine releasing agents, non-selective serotonin receptor agonists, and/or monoamine oxidase inhibitors,[22][23][24][25] and produce psychostimulant, entactogen, and/or psychedelic effects.[19][20][21] The most well-known of these agents are α-methyltryptamine (αMT) and α-ethyltryptamine (αET), both of which were used clinically as antidepressants for a brief period of time in the past and are abused as recreational drugs.[20][21] In accordance with its action as a dual releasing agent of serotonin and dopamine, αET has been found to produce serotonergic neurotoxicity similarly to amphetamines like MDMA and PCA, and the same is also likely to hold true for other serotonin and dopamine-releasing α-alkyltryptamines such as αMT, 5-MeO-αMT, and various others.[26]

Structure Common name Chemical name CAS number
  Tryptophan (2S)-2-amino-3-(1H-indol-3-yl)propanoic acid 73-22-3
  5-Hydroxytryptophan 2-amino-3-(5-hydroxy-1H-indol-3-yl)propanoic acid 4350-09-8
  αMT 1-(1H-Indol-3-yl)propan-2-amine 299-26-3
  4-HO-αMT 3-(2-aminopropyl)-1H-indol-4-ol 15066-09-8
  4-Methyl-αMT 1-methyl-2-(4-methyl-1H-indol-3-yl)-ethylamine 3569-29-7
  5-Fluoro-αMT 1-(5-fluoro-1H-indol-3-yl)propan-2-amine 712-08-3
  5-Chloro-αMT 1-(5-Chloro-1H-indol-3-yl)propan-2-amine 712-07-2
  5-HO-αMT (αMS/α-methyl-5-HT) 3-(2-aminopropyl)-1H-indol-5-ol 304-52-9
  5-MeO-αMT 1-(5-methoxy-1H-indol-3-yl)propan-2-amine 1137-04-8
  5-Ethoxy-αMT 1-(5-ethoxy-1H-indol-3-yl)propan-2-amine 101832-83-1
  5-Isopropoxy-αMT 1-{5-[(propan-2-yl)oxy]-1H-indol-3-yl}propan-2-amine
  BW-723C86 1-[5-(2-Thienylmethoxy)-1H-indol-3-yl]-2-propanamine 160521-72-2
  6-Fluoro-αMT 1-(6-fluoro-1H-indol-3-yl)propan-2-amine 712-11-8
  7-Chloro-AMT 1-(7-chloro-1H-indol-3-yl)propan-2-amine 711-99-9
  AL-37350A (4,5-dihydropyrano-αMT) (S)-(+)-1-(2-Aminopropyl)-8,9-dihydropyrano[3,2-e]indole 362603-40-5
  Compound 5 [27] 1-(3H-benzo[e]indol-1-yl)propan-2-amine
  αET 1-(1H-indol-3-yl)butan-2-amine 2235-90-7
  4-Methyl-αET 1-(4-Methyl-1H-indol-3-yl)butan-2-amine 28289-30-7
  4-HO-αET 1-(4-hydroxy-1H-indol-3-yl)butan-2-amine 28289-28-3
  5-Fluoro-αET 1-(5-fluoro-1H-indol-3-yl)butan-2-amine 1380137-98-3
  5-Methyl-αET 1-(5-methyl-1H-indol-3-yl)butan-2-amine 1380148-21-9
  5-MeO-αET 1-(5-methoxy-1H-indol-3-yl)butan-2-amine 4765-10-0
  7-Methyl-αET 1-(7-methyl-1H-indol-3-yl)butan-2-amine 13712-80-6
  N-Methyl-5-MeO-αMT (α,N,O-TMS/α,N,O-trimethyl-5-HT) [1-(5-methoxy-1H-indol-3-yl)propan-2-yl](methyl)amine 4822-13-3
  Indolylpropylaminopentane (α,N-DPT) 1-(1H-indol-3-yl)-N-propylpentan-2-amine
  N,N-Dimethyl-αMT (α,N,N-TMT) (2-(1H-Indol-3-yl)-1-methyl-ethyl)dimethylamine 4761-32-4
  N,N-Dimethyl-5-MeO-αMT (5-MeO-α,N,N-TMT) (2-(5-methoxy-1H-Indol-3-yl)-1-methyl-ethyl)dimethylamine 101831-90-7
  αMDiPT (2-(1H-Indol-3-yl)-1-methyl-ethyl)diisopropylamine
  MPMI[28] 3-[(1-methylpyrrolidin-2-yl)methyl]-1H-indole 143321-54-4
  Lucigenol (R)-3-(N-methylpyrrolidin-2-ylmethyl)-4-hydoxyindole 250672-65-2
  5-MeO-MPMI 5-Methoxy-3-{[(2R)-1-methylpyrrolidin-2-yl]methyl}-1H-indole 143321-57-7
  5F-MPMI[29] (R)-5-fluoro-3-[(1-methylpyrrolidin-2-yl)methyl]-1H-indole
  5-Br-MPMI 5-bromo-3-[(1-methylpyrrolidin-2-yl)methyl]-1H-indole 143322-57-0
  Eletriptan 3-{[(2R)-1-methylpyrrolidin-2-yl]methyl}-5-[2-(benzenesulfonyl)ethyl]-1H-indole 143322-58-1
  Z5247692566[4][30] 4-[(3,3-dimethyloxolan-2-yl)methyl]-3-[(1H-indol-3-yl)methyl]morpholine
  BK-NM-AMT (α,N-dimethyl-β-ketotryptamine)[31][32][33] 1-(1H-indol-3-yl)-2-(methylamino)propan-1-one
  BK-5F-NM-AMT (5-fluoro-α,N-dimethyl-β-ketotryptamine)[34][35][36][33] 1-(5-fluoro-1H-indol-3-yl)-2-(methylamino)propan-1-one
BK-5Cl-NM-AMT (5-chloro-α,N-dimethyl-β-ketotryptamine)[36][37][38] 1-(5-chloro-1H-indol-3-yl)-2-(methylamino)propan-1-one
BK-5Br-NM-AMT (5-chloro-α,N-dimethyl-β-ketotryptamine)[36][39][40] 1-(5-bromo-1H-indol-3-yl)-2-(methylamino)propan-1-one
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A number of related compounds are known, with a similar structure but having the indole core flipped and/or replaced with related cores such as indoline, indazole, benzothiophene, or benzofuran. Some of them are isotryptamines. Like tryptamines, these related compounds are primarily active as agonists at the 5-HT2 family of serotonin receptors, with applications in the treatment of glaucoma, cluster headaches, or as anorectics.

Structure Common name Chemical name CAS number
  Dimemebfe 2-(5-Methoxy-1-benzofuran-3-yl)-N,N-dimethylethanamine 140853-58-3
  5-MeO-DiBF N-[2-(5-Methoxy-1-benzofuran-3-yl)ethyl]-N-(propan-2-yl)propan-2-amine
  3-APB 3-(2-aminopropyl)benzofuran 105909-13-5
  Mebfap 3-(2-aminopropyl)-5-methoxybenzofuran 140853-59-4
  Isotryptamine 2-indol-1-ylethanamine 13708-58-2
  isoAMT 1-indol-1-ylpropan-2-amine 1227465-67-9
(S)-5,6-Difluoro-isoAMT [41] (S)-1-(5,6-difluoroindol-1-yl)propan-2-amine
  Ro60-0175 (S)-(6-chloro-5-fluoro-1H-indol-1-yl)propan-2-amine 169675-09-6
  isoDMT 2-indol-1-yl-N,N-dimethylethanamine 87482-09-5
  5-MeO-isoDMT 2-(5-methoxyindol-1-yl)-N,N-dimethylethanamine
  6-MeO-isoDMT 2-(6-methoxyindol-1-yl)-N,N-dimethylethanamine
  AAZ-A-154 (DLX-001) (2R)-1-(5-methoxy-1H-indol-1-yl)-N,N-dimethylpropan-2-amine 2227169-50-4
  Example 16 [42][43] 1-(7-methoxyimidazo[1,5-a]pyridin-3-yl)-N,N-dimethylpropan-2-amine
  Example 1 [44] 1-(3-methyl-8,9-dihydropyrano[2,3-g]indol-1(7H)-yl)propan-2-amine
  VER-3323 (2S)-1-(6-bromo-2,3-dihydroindol-1-yl)propan-2-amine 259857-99-3
  AL-34662 1-((S)-2-Aminopropyl)-1H-indazol-6-ol 210580-75-9
  O-methyl-AL-34662 1-((S)-6-methoxy-2-aminopropyl)-1H-indazole 210580-60-2
  7-methyl-AL-34662 1-((S)-2-Aminopropyl)-7-methyl-1H-indazol-6-ol 874668-67-4
  7-chloro-AL-34662 1-((S)-2-Aminopropyl)-7-chloro-1H-indazol-6-ol 874881-86-4
  AL-38022A (S)-2-(8,9-dihydro-7H-pyrano[2,3-g]indazol-1-yl)-1-methylethylamine 478132-11-5
  Example 9 [45] (S)-α-methyl-pyrano[2,3-g]indazole-1(7H)-ethanamine 478132-12-6
  Example 3 [46] (S)-7,8-dihydro-α-methyl-1H-[1,4]dioxino[2,3-g]indazole-1-ethanamine 890087-75-9
  Example 1 [47] (S)-8,9-dihydro-α,9-dimethylpyrazolo[3,4-f][1,4]benzoxazine-1(7H)-ethanamine 1373917-69-1
  YM-348 (2S)-1-(7-ethyl-1H-furo[2,3-g]indazol-1-yl)propan-2-amine 372163-84-3
  2-desethyl-YM-348 [48] (2S)-1-(1H-furo[2,3-g]indazol-1-yl)propan-2-amine 748116-94-1
  I-32 [49] 3-(1-methylpyrrolidin-3-yl)-1H-indol-4-ol
  2-Azapsilocin (Psilocin indazole analogue, P-6)[50] 3-[2-(dimethylamino)ethyl]-1H-indazol-4-ol
  4-Aza-5-MeO-DPT (P-11) N-[2-(5-methoxy-1H-pyrrolo[3,2-b]pyridin-3-yl)ethyl]-N-propylpropan-1-amine
  5-Aza-4-MeO-DiPT (P-36) N-[2-(4-methoxy-1H-pyrrolo[3,2-c]pyridin-3-yl)ethyl]-N-(propan-2-yl)propan-2-amine
  7-Aza-5-MeO-DiPT (P-19) N-[2-(5-methoxy-1H-pyrrolo[2,3-b]pyridin-3-yl)ethyl]-N-(propan-2-yl)propan-2-amine
  VU6067416[51] 3-(1,2,5,6-tetrahydropyridin-3-yl)-5-bromo-1H-indazole
  (R)-69 3-[(5R)-5-methyl-1,2,5,6-tetrahydropyridin-3-yl]-1H-pyrrolo[2,3-b]pyridine
  SN-22 3-(1-methylpiperidin-4-yl)-1H-indole 17403-07-5

Tryptamine-based therapeutics

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Drug Mechanism Treatment Effect Structure
Sumatriptan[52] 5-HT1B and 5-HT1D agonist Migraine Headaches Vasoconstriction of brain blood vessels
 
Sumatriptan
Rizatriptan[52] 5-HT1B and 5-HT1D agonist Migraine Headaches Vasoconstriction of brain blood vessels
 
Rizatriptan
Zolmitriptan[52] 5-HT1B and 5-HT1D agonist Migraine Headaches Vasoconstriction of brain blood vessels
 
Zolmitriptan
Almotriptan[52] 5-HT1B and 5-HT1D agonist Migraine Headaches Vasoconstriction of brain blood vessels
 
Almotriptan
Eletriptan[52] 5-HT1B and 5-HT1D agonist Migraine Headaches Vasoconstriction of brain blood vessels
 
Eletriptan
Frovatriptan[52] 5-HT1B and 5-HT1D agonist Migraine Headaches Vasoconstriction of brain blood vessels
 
Frovatriptan
Naratriptan[52] 5-HT1B and 5-HT1D agonist Migraine Headaches Vasoconstriction of brain blood vessels
 
Naratriptan

Further reading

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See also

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References

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