CarboxylicAcidPhenylMethylEsterHydrochloride,QuinaprilHcl (S)-1,2,3,4-Tetra hydro-3-Isoquinoline carboxylic acid phenyl methylester hydrochloride 3-Isoquinolinecarboxylic acid, 1,2,3,4-tetrahydro-, phenylMethyl ester, hydrochloride, (3S)- L-1,2,3,4-TETRAHYDROISOQUINOLINE-3-CARBOXYLIC ACID BENZYL ESTER HCL (S)-Benzyl 1,2,3,4-tetrahydroisoquinoline-3-carboxylate hydrochloride Quinapril Bicyclic Acid Benzyl Ester (S)-1,2,3,4-Tetrahydroisoquinoline-3-carboxylic acid benzyl ester HCl Benzyl (3S)-1,2,3,4-Tetrahydro-3-Isoquinolinecarboxylate Hydrochloride (1:1)