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Quinapril is an angiotensin-converting enzyme (ACE) inhibitor used to treat high blood pressure and heart failure. It works by relaxing blood vessels and lowering blood pressure, making it easier for the heart to pump blood. Quinapril helps reduce the risk of stroke, heart attack, and kidney problems, particularly in individuals with hypertension.

Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Quinapril and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Quinapril impurities, metabolites, nitrosamine derivatives (N-NO compounds), and stable isotope-labeled products. These reference standards play a critical role in pharmaceutical R&D, supporting activities such as product formulation, ANDA and DMF submissions, quality assurance, analytical method development, and stability assessments.
All Quinapril-related substances undergo comprehensive characterization and are delivered with complete Certificates of Analysis and supporting analytical documentation to ensure regulatory adherence. Upon request, we can offer EP/USP traceable standards. Our products are routinely re-evaluated to maintain consistent quality and performance.

Quinapril

CAT No: CL-QNP-01 CAS No: 85441-61-8 Mol Wt: 438.5 : 36.5 Mol F: C25H30N2O5 : HCl Inv Status: Custom Synthesis

Chemical Name: (S)-2-(((S)-1-Ethoxy-1-oxo-4-phenylbutan-2-yl)-L-alanyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid hydrochloride

Quinapril EP Impurity A

CAT No: CL-QNP-02 CAS No: 74163-81-8 Mol Wt: 177.2 Mol F: C10H11NO2 Inv Status: In Stock

Chemical Name: (S)-1,2,3,4-Tetrahydroisoquinoline-3-carboxylic acid

Quinapril EP Impurity B

CAT No: CL-QNP-03 CAS No: 82717-96-2 Mol Wt: 279.3 Mol F: C15H21NO4 Inv Status: In Stock

Chemical Name: (2S)-2-[[(1S)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino] propanoic acid

Quinapril EP Impurity C

CAT No: CL-QNP-04 CAS No: 82768-85-2 Mol Wt: 410.5 Mol F: C23H26N2O5 Inv Status: Custom Synthesis

Chemical Name: (3S)-2-[(2S)-2-[[(1S)-1-Carboxy-3-phenylpropyl]amino]-1-oxopropyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic Acid

Quinapril EP Impurity D

CAT No: CL-QNP-05 CAS No: 103733-49-9 Mol Wt: 420.5 Mol F: C25H28N2O4 Inv Status: Custom Synthesis

Chemical Name: (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 EP Impurity E

CAT No: CL-QNP-06 CAS No: 2055735-09-4 Mol Wt: 444.6 Mol F: C25H36N2O5 Inv Status: Custom Synthesis

Chemical Name: (S)-2-[(S)-N-[(S)-1-Carboxy-3-cyclohexylpropyl]alanyl]-1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid, 1-ethyl ester

Quinapril EP Impurity G

CAT No: CL-QNP-07 CAS No: 103833-16-5 Mol Wt: 438.5 Mol F: C25H30N2O5 Inv Status: Custom Synthesis

Chemical Name: (3R)-2-[(2S)-2-[[(1S)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino]propanoyl]-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid

Quinapril EP Impurity H

CAT No: CL-QNP-08 CAS No: NA Mol Wt: 438.5 Mol F: C25H30N2O5 Inv Status: Custom Synthesis

Chemical Name: (3R)-2-[(2S)-2-[[(1R)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino]propanoyl]-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid

Quinapril EP Impurity I

CAT No: CL-QNP-09 CAS No: 103775-09-3 Mol Wt: 438.5 Mol F: C25H30N2O5 Inv Status: Custom Synthesis

Chemical Name: (3S)-2-[(2S)-2-[[(1R)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino]propanoyl]-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid

Quinapril EP Impurity J

CAT No: CL-QNP-10 CAS No: NA Mol Wt: 470.5 Mol F: C25H30N2O7 Inv Status: Custom Synthesis

Chemical Name: (1R,3S)-2-[(2S)-2-[[(1S)-1-(Ethoxycarbonyl)-3-phenylpropyl](hydroxy)amino] propanoyl]-1-hydroxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid

Quinapril EP Impurity M

CAT No: CL-QNP-11 CAS No: NA Mol Wt: 470.5 Mol F: C25H30N2O7 Inv Status: Custom Synthesis

Chemical Name: (1R,3S)-2-[(2S)-2-[[(1S)-1-(Ethoxycarbonyl)-3-phenylpropyl]amino]propanoyl]-1-hydroperoxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid

Quinapril Impurity 2

CAT No: CL-QNP-12 CAS No: NA Mol Wt: 666.6 Mol F: C27H34N2O5 Inv Status: Custom Synthesis

Chemical Name: 2-[2-(1-Ethoxycarbonyl-3-phenyl-propylamino)-propionyl]-1,2,3,4-tetrahydro-isoquinoline-3-carboxylic acid ethyl ester

Quinapril Ethyl Ether

CAT No: CL-QNP-13 CAS No: 103733-35-3 Mol Wt: 466.6 Mol F: C27H34N2O5 Inv Status: Custom Synthesis

Chemical Name: Ethyl (S)-2-(((S)-1-ethoxy-1-oxo-4-phenylbutan-2-yl)-L-alanyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylate

Quinapril Methyl Ester

CAT No: CL-QNP-15 CAS No: 118194-43-7 Mol Wt: 424.5 Mol F: C24H28N2O5 Inv Status: Custom Synthesis

Chemical Name: (S)-2-(((S)-1-methoxy-1-oxo-4-phenylbutan-2-yl)-L-alanyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid

Quinapril Isopropyl Ester

CAT No: CL-QNP-16 CAS No: 955034-25-0 Mol Wt: 452.6 Mol F: C26H32N2O5 Inv Status: Custom Synthesis

Chemical Name: (S)-2-(((S)-1-isopropoxy-1-oxo-4-phenylbutan-2-yl)-L-alanyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid

Quinapril Benzyl ester

CAT No: CL-QNP-17 CAS No: 82586-53-6 Mol Wt: 528.6 Mol F: C32H36N2O5 Inv Status: Custom Synthesis

Chemical Name: Benzyl (S)-2-(((S)-1-ethoxy-1-oxo-4-phenylbutan-2-yl)-L-alanyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylate

Quinapril-d5

CAT No: CL-QNP-18 CAS No: 1279029-79-6 Mol Wt: 443.6 Mol F: C25H25D5N2O5 Inv Status: Custom Synthesis

Chemical Name: (S)-2-(((S)-1-Ethoxy-1-oxo-4-(phenyl-d5)butan-2-yl)-L-alanyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid

Quinaprilat-D5

CAT No: CL-QNP-19 CAS No: 1279034-23-9 Mol Wt: 415.5 Mol F: C23H21D5N2O5 Inv Status: Custom Synthesis

Chemical Name: (S)-2-(((S)-1-Carboxy-3-(phenyl-d5)propyl)-L-alanyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid

Quinapril impurity 1

CAT No: CL-QNP-20 CAS No: NA Mol Wt: 392.45 Mol F: C23H24N2O4 Inv Status: In Stock

Chemical Name: (4S,6S,14aS)-6-methyl-4-phenethyl-5,6,14,14a-tetrahydro-1H-[1,4,7]oxadiazon ino[4,3-b]isoquinoline-1,3,7(4H,9H)-trione

Quinapril Hydrochloride

CAT No: CL-QNP-21 CAS No: 82586-55-8 Mol Wt: 438.5 : 36.5 Mol F: C25H30N2O5 : HCl Inv Status: Custom Synthesis

Chemical Name: (S)-2-(((S)-1-Ethoxy-1-oxo-4-phenylbutan-2-yl)-L-alanyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid hydrochloride

Type:Impurity Reference Standard

Total Products: 20

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