Synonyms: Protocatechuicacid, 5-methoxy-, methyl ester (6CI,7CI,8CI); 3-Methoxy-4,5-dihydroxybenzoicacid methyl ester; Methyl 3,4-dihydroxy-5-methoxybenzoate; Methyl 3-methoxy-4,5-dihydroxybenzoate; Methyl4,5-dihydroxy-3-methoxybenzoate; NSC 251664 ;M3OMG