Gallic acid CAS 149-91-7
Gallic acid anhydrous powder CAS 149-91-7, 3,4,5-trihydroxybenzoic acid is a trihydroxybenzoic acid, a type of phenolic acid, a type of organic acid, found in gallnuts, sumac, witch hazel, tea leaves, oak bark, and other plants.is obtained from nutgalls and other plants or by the hydrolysis.