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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Quinapril, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Quinapril impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Quinapril-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.

Quinapril Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Quinapril D4 Stable Isotopes CS-BV-00011 85441-61-8 (Unlabeled) Enquire
Quinapril D5 Stable Isotopes CS-O-14665 1279029-79-6 Enquire
Quinaprilat-d5 Stable Isotopes CS-T-61013 1279034-23-9 In Stock
Quinapril-d5 Benzyl Ester Stable Isotopes CS-T-102094 Not Available Enquire
Quinapril-d5 Hydrochloride Stable Isotopes CS-O-10074 1356020-03-5 In Stock


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Quinapril API Standards CS-ZG-21243 85441-61-8 Enquire
Quinapril Hydrochloride API Standards CS-O-10225 82586-55-8 In Stock


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Quinaprilat Metabolites CS-O-10328 82768-85-2 In Stock


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-nitroso Quinapril Impurities CS-O-39063 2922985-13-3 In Stock
N-Nitroso Quinapril Decarboxy impurity Impurities CS-O-46257 Not Available In Stock
O-Desethyl-O-isopropyl Quinapril Impurities CS-T-15885 955034-25-0 Enquire
Quinapril Benzyl ester Impurities CS-O-32394 82586-53-6 Enquire
Quinapril Decarboxy impurity Impurities CS-O-46256 Not Available Enquire
Quinapril Diketopiperazine Impurities CS-T-61012 103733-49-9 In Stock
Quinapril EP Impurity G Impurities CS-O-36983 103775-06-0 Enquire
Quinapril EP Impurity H Impurities CS-EO-00773 Not Available Enquire
Quinapril EP Impurity I Impurities CS-EO-00774 103775-09-3 Enquire
Quinapril Ethyl Ester Maleic Acid Salt Impurities CS-T-61014 103733-36-4 Enquire
Quinapril Impurity E Impurities CS-P-02029 2055735-09-4 Enquire
Quinapril Impurity M Impurities CS-P-02030 Not Available Enquire
Quinapril Methyl Ester Analog Impurities CS-O-47886 118194-43-7 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Quinapril Ethyl Ester Fine Chemicals CS-ZH-28501 103733-35-3 Enquire