Synonyms: 3,4-Dihydroxybenzoic acid；Protocatechuic acid

CAS: 99-50-3

Molecular Formula: C₇H₆O₄

Molecular Weight: 154.12

Properties: White to slightly brown needle shaped crystals; soluble in hot water, ethanol, and ether, slightly soluble in water, insoluble in benzene and petroleum ether.

Applications:

Used as an intermediate for dyes, pharmaceuticals, and analytical reagents (detection iron).