A momordicine is any of several compounds found in the bitter melon vine, Momordica charantia. They are glycosides of cucurbitane derivatives.[1] They include
- Momordicine II[1]
- Momordicine IV, 7-O-D-glucopyranosyl-3,23-dihydroxycucurbita-5,24-dien-19-al[1]
Momordicine II and IV can be extracted from the leaves of M. charantia by methanol. They have been found to deter egg-laying of the leaf mining fly (Liriomyza trifolii) at a combined concentration of 96 μg/cm2.[1]