2-Chlorobenzoic acid 4-benzoyl-1-methyl-4-piperidinyl ester conjugate monoacid 71266-43-8 BENZOIC ACID, 2-CHLORO-, 4-BENZOYL-1-METHYL-4-PIPERIDINYL ESTER, conjugate monoa Benzoic acid, 2-chloro-, 4-benzoyl-1-methyl-4-piperidinyl ester, conjugate monoacide