Benazepril Impurity 2(Benazepril EP Impurity B) Benazepril EP Imp B 2-[(SR)-3-{[(RS)-1-Ethoxy-1-oxo-4-phenylbutan-2-yl]amino}-2-oxo-2,3,4,5-tetrahydro-1H -benzo[b]azepin-1-yl]acetic acid Hydrochloride Benazepril Hydrochloride Impurity D as Hydrochloride Benazepril Related Compound D as Hydrochloride Benazepril Hydrochloride EP Impurity D as Hydrochloride Benazepril USP Related Compound D as Hydrochloride