NCIt definition : A steroid derivative characterized by the hydroxyl group in position C-3 of the steroid
skeleton, and unsaturated bonds in position 5-6 of the B ring, and position 22-23
in the alkyl substituent. Stigmasterol is found in the fats and oils of soybean, calabar
bean and rape seed, as well as several other vegetables, legumes, nuts, seeds, and
unpasteurized milk.;
Alternative definition : CRCH: Phytosterol with a double bond at the 22nd carbon.;