(R)-2-((R)-5-Carboxymethyl-4-oxo-2,3,4,5-tetrahydro-benzo[b][1,4]thiazepin-3-ylamino)-5-methyl-hexanoic acid ethyl ester; hydrochloride

(S)-2-((R)-5-Carboxymethyl-4-oxo-2,3,4,5-tetrahydro-benzo[b][1,4]thiazepin-3-ylamino)-5-methyl-hexanoic acid ethyl ester; hydrochloride

3(R)-[1(S)-carboxy-3-cyclohexylpropyl]amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepine-5-acetic acid

tert-butyl (R)-3-<(S)-carboxy-3-phenylpropyl>amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepine-5-acetate

(R)-3-<(S)-1-ethoxycarbonyl-3-phenylpropyl>amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzothiazepine-5-acetic acid