4-Methoxybenzoic acid 4-benzoyl-1-methyl-4-piperidinyl ester conjugate monoacid 71266-46-1 BENZOIC ACID, 4-METHOXY-, 4-BENZOYL-1-METHYL-4-PIPERIDINYL ESTER, conjugate mono Benzoic acid, 4-methoxy-, 4-benzoyl-1-methyl-4-piperidinyl ester, conjugate monoacid