Pelargonidin

Pelargonidin (from Greek pelargos = stork, after the fruit of the pelargonium, which is similar to the stork's bill) is an aglycon of numerous anthocyanins with the molecular formula: C15H11O5.

Pelargonidin, an anthocyanidin, is widely used as a glycoside in plants. The substance causes the pink, orange and scarlet red colouring of many fruits and petals.

Natural pelargonidin glycosides (pelargonins) include callistephin (3-beta-glucoside), which is found in red garden asters (Callistephus), the fragarin (3-beta-galactoside) of strawberries (Fragaria) and the pelargonidin glycosides of various types of pelargoniums and red garden dahlias.