Stigmasterol's a phytosterol with a molecular weight of 412.691 and a formula of C29H48O. It's also known as Wulzen anti-stiffness factor. Stigmasterol's one of a group of plant sterols, or phytosterols, that includes beta-sitosterol, campesterol, ergosterol (provitamin D2), brassicasterol, delta-7-stigmasterol and delta-7-avenasterol, that're chemically similar to animal cholesterol. Phytosterols are insoluble in water but soluble in most organic solvents and contain one alcohol functional gro… (More on Stigmasterol)