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103733-49-9

103733-49-9 structure

103733-49-9 structure

Name: Quinapril Diketopiperazine
Chemical Name: Quinapril Diketopiperazine
CAS Number: 103733-49-9
Molecular Formula: C₂₅H₂₈N₂O₄
Molecular Weight: 420.50
Create Date: 2016-11-09 10:49:00
Modify Date: 2026-08-31 17:02:29
PD 109488 is a quinapril diketopiperazine metabolite[1].

Name	Quinapril Diketopiperazine
Synonyms	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 Impurity Ⅰ ethyl (2S)-2-[(3S,11aS)-3-methyl-1,4-dioxo-3,6,11,11a-tetrahydropyrazino[1,2-b]isoquinolin-2-yl]-4-phenylbutanoate Quinapril hydrochloride Related Compound A: 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 (Quinapril hydrochloride Imp. D ) Quinapril RC A (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 (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 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) (S)-ethyl 2-((3S,11aS)-3-methyl-1,4-dioxo-3,4,11,11a-tetrahydro-1H-pyrazino[1,2-b]isoquinolin-2(6H)-yl)-4-phenylbutanoate 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 Impurity D (Quinapril Related Compound A) Quinapril Impurity 4（Quinapril Impurity D） Quinapril Related Compound A (Ethyl[3S-[2(R),3a,11a beta]]-1,3,4,6,11,11a-hexahydro-3-methyl-1,4-d Quinapril Hydrochloride Impurity D 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)) Ethyl (2S)-2-[(3S,11aS)-3-Methyl-1 Quinapril Impurity D (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 Quinapril Impurity D/ Quinapril Related Compound A (Quinapril Diketopiperazine) 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 (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 Quinapril impurity A Quinapril Related Compound A(Secondy Standds traceble to Quinapril Hydrochloride Impurity Ⅰ：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-yl]-4-phenylbutanoate Ethyl (2S)-2-[(3S,11aS)-3-Methyl-1,4-dioxo-1,3,4,6,11,11a-hexahydro-2H-pyrazino[1,2-b]isoquinolin-2 (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 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 Quinapril Related Compound A

Description	PD 109488 is a quinapril diketopiperazine metabolite[1].
Related Catalog	Research Areas >> Others Signaling Pathways >> Others >> Others
References	[1]. A R Kugler, et al. Determination of quinapril and quinaprilat by high-performance liquid chromatography with radiochemical detection, coupled to liquid scintillation counting spectrometry. J Chromatogr B Biomed Appl. 1995 Apr 21;666(2):360-7.

Density	1.25g/cm3
Boiling Point	644.5ºC at 760 mmHg
Molecular Formula	C₂₅H₂₈N₂O₄
Molecular Weight	420.50
Flash Point	343.6ºC
Exact Mass	420.20500
PSA	66.92000
LogP	2.61090
Vapour Pressure	1.68E-16mmHg at 25°C
Index of Refraction	1.617

RIDADR	NONH for all modes of transport

85441-61-8 structure

85441-61-8

~77%

103733-49-9 structure

103733-49-9

Literature: Klutchko; Blankley; Fleming; Hinkley; Werner; Nordin; Holmes; Hoefle; Cohen; Essenburg Journal of Medicinal Chemistry, 1986 , vol. 29, # 10 p. 1953 - 1961

74163-81-8 structure

74163-81-8

~%

103733-49-9 structure

103733-49-9

Literature: Klutchko; Blankley; Fleming; Hinkley; Werner; Nordin; Holmes; Hoefle; Cohen; Essenburg Journal of Medicinal Chemistry, 1986 , vol. 29, # 10 p. 1953 - 1961

77497-74-6 structure

77497-74-6

~%

103733-49-9 structure

103733-49-9

Literature: Klutchko; Blankley; Fleming; Hinkley; Werner; Nordin; Holmes; Hoefle; Cohen; Essenburg Journal of Medicinal Chemistry, 1986 , vol. 29, # 10 p. 1953 - 1961

80828-26-8 structure

80828-26-8

~%

103733-49-9 structure

103733-49-9

Literature: Klutchko; Blankley; Fleming; Hinkley; Werner; Nordin; Holmes; Hoefle; Cohen; Essenburg Journal of Medicinal Chemistry, 1986 , vol. 29, # 10 p. 1953 - 1961

82586-56-9 structure

82586-56-9

~%

103733-49-9 structure

103733-49-9

Literature: Klutchko; Blankley; Fleming; Hinkley; Werner; Nordin; Holmes; Hoefle; Cohen; Essenburg Journal of Medicinal Chemistry, 1986 , vol. 29, # 10 p. 1953 - 1961

82586-55-8 structure

82586-55-8

~%

85441-61-8 structure

85441-61-8

103733-49-9 structure

103733-49-9

Literature: Li; Guo; Zografi Pharmaceutical Research, 2002 , vol. 19, # 1 p. 20 - 26

Precursor 6
85441-61-8 74163-81-8 77497-74-6 80828-26-8
82586-56-9 82586-55-8
DownStream 0

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