Momordicinin or 13β,28-epoxy-urs-11-en-3-one is chemical compound, a triterpene with formula C30H46O2, found in the fresh fruit of the bitter melon (Momordica charantia).[1]
The compound is soluble in ethyl acetate and chloroform but not in petrol. It crystallizes as irregular plates that melt at 146−147 °C. It was isolated in 1997 by S. Begum and others.[1]