Hirsutidin is an O-methylated anthocyanidin, a chemical compound belonging to the anthocyanins.

It can be found in Catharanthus roseus[1] (Madagascar periwinkle) where it is the prominent compound in petals and can also be found in callus cultures.

[2] 3-O-(6-O-p-coumaroyl) glucoside of hirsutidin can also be found in Catharanthus roseus.

[3] Diglucosides: Others glycosides: