piperonal

A white powder, C₈H₆O₃, having a floral odor, used as flavoring and in perfume.

A white crystalline substance, C₈H₆O₃, the methylene ether of protocatechuic aldehyde. It is made by oxidizing piperic acid with potassium permanganate, and in other ways. Known in perfumery as heliotropin, on account of its odor.

A white crystalline substance obtained by oxidation of piperic acid, and regarded as a complex aldehyde.

A white crystalline powder with a floral odour, used in perfume

The methylene ether of 3,4 dihydroxy benzaldehyde; having a melting point of 37°C and boiling point of 263°C