103733-49-9

PD 109488 Quinapril USP RC A Quinapril Impurity Ⅰ Quinapril EP Impurity D Quinapril USP impurity A Quinapril Diketopiperazine Quinapril Related CoMpound A Quinapril USP Related Compound A Quinapril Hydrochloride Impurity D Ethyl (2S)-2-[(3S,11aS)-3-Methyl-1, Quinapril Hydrochloride EP Impurity D Quinapril Impurity 4（Quinapril EP Impurity D） Quinapril EP Impurity D (Quinapril USP Related Compound A) Quinapril Hydrochloride Impurity Ⅰ：Quinapril Diketopiperazine Quinapril Hydrochloride Impurity Ⅰ：Quinapril Diketopiperazine Quinapril Related Compound A(Secondary Standards traceble to USP) Quinapril EP Impurity D/ Quinapril Related Compound A (Quinapril Diketopiperazine) Ethyl (2S)-2-[(3S,11aS)-3-Methyl-1,4-dioxo-1,3,4,6,11,11a-hexahydro-2H-pyrazino[1,2-b]isoquinolin-2- Quinapril Related Compound A (Ethyl[3S-[2(R*),3a,11a beta]]-1,3,4,6,11,11a-hexahydro-3-methyl-1,4-d (1593412) (αS,3S,11aS)-1,3,4,6,11,11a-Hexahydro-3-methyl-1,4-dioxo-α-(2-phenylethyl)-2H-pyrazino[1,2-b]isoquinoline-2-acetic Acid (aS,3S,11aS)-1,3,4,6,11,11a-Hexahydro-3-methyl-1,4-dioxo-a-(2-phenylethyl)-2H-pyrazino[1,2-b]isoquinoline-2-acetic Acid (αS,3S,11aS)-1,3,4,6,11,11a-Hexahydro-3-Methyl-1,4-dioxo-α-(2-phenylethyl)-2H-pyrazino[1,2-b]isoquinoline-2-acetic Acid (aS,3S,11aS)-1,3,4,6,11,11a-Hexahydro-3-methyl-1,4-dioxo-α-(2-phenylethyl)-2H-pyrazino[1,2-β]isoquinoline-2-acetic Acid ethyl (2S)-2-[(3S,11aS)-3-methyl-1,4-dioxo-1,3,4,6,11,11a-hexahydro-2H-pyrazino[1,2-b]isoquinolin-2-yl]-4-phenylbutanoate (αS,3S,11aS)-1,3,4,6,11,11a-Hexahydro-3-methyl-1,4-dioxo-α-(2-phenylethyl)-2H-pyrazino[1,2-b]isoquinoline-2-acetic acid ethyl ester 2H-Pyrazino[1,2-b]isoquinoline-2-acetic acid, 1,3,4,6,11,11a-hexahydro-3-methyl-1,4-dioxo-α-(2-phenylethyl)-, ethyl ester, (αS,3S,11aS)- Ethyl [3S-[2(R*),3a,11a beta]]-1,3,4,6,11,11a-hexahydro-3-methyl-1,4-dioxo-alpha-(2-phenylethyl)-2H-pyrazino[1,2-b]isoquinoline-2-acetate (alphaS,3S,11aS)-1,3,4,6,11,11a-Hexahydro-3-methyl-1,4-dioxo-alpha-(2-phenylethyl)-2H-pyrazino[1,2-b]isoquinoline-2-acetic acid ethyl ester Quinapril Impurity Ⅰ Ethyl[3S-[2(R*),3a,11a β]]-1,3,4,6,11,11a-hexahydro- 3-methyl-1,4-dioxo-α -(2-phenylethyl)-2H-pyrazino[1 ,2-b]isoquinoline-2-acetate 2H-Pyrazino(1,2-B)isoquinoline-2-acetic acid, 1,3,4,6,11,11A-hexahydro-3-methyl-1,4-dioxo-alpha-(2-phenylethyl)-, ethyl ester, (3S-(2(R*),3alpha-11abeta))- Quinapril Related Compound A (50 mg) (Ethyl [3S-[(2R*), 3a, 11ab]]-1,3,4,6,11,11a-hexahydro-3-methyl-1,4-dioxo-a-(2-phenylethyl)-2H-pyrazino[1,2-b]isoquinoline-2-acetate) QUINAPRIL RELATED COMPOUND A (50 MG) (ETHYL[3S-[2(R*),3A,11A BETA]]-1,3,4,6,11,11A-HEXAHYDRO-3-METHYL-1,4-DIOXO-ALPHA-(2-PHENY-LETHYL)-2H-PYRAZINO[1,2-B]ISOQUINOLINE-2-ACETATE) QUINAPRIL RELATED COMPOUND A (50 MG) (ETHYL[3S-[2(R*),3A,11A BETA]]-1,3,4,6,11,11A-HEXAHYDRO-3-METHYL-1,4-DIOXO-ALPHA-(2-PHENY-LETHYL)-2H-PYRAZINO[1,2-B]ISOQUINOLINE-2-ACETATE)