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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Captopril, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Captopril 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 Captopril-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.

Captopril Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(S)-S-Benzoylcaptopril-d3 Stable Isotopes CS-T-100976 Not Available Enquire
Captopril 13C5,15N Stable Isotopes CS-EK-02408 62571-86-2 unlabeled Enquire
Captopril Disulfide-D6 Stable Isotopes CS-T-103857 64806-05-9(Unlabelled) Enquire
Captopril-d3 Stable Isotopes CS-Y-00038 1356383-38-4 In Stock
S-(3-Acetylanisole-d3) Captopril-13CD3 Stable Isotopes CS-T-100939 Not Available Enquire
S-(Pentafluoro-6-methylbenzene) Captopril (Proline-2,5,5-d3) Stable Isotopes CS-T-97228 Not Available Enquire
S-[3-(2,5,6-Trimethyl)bimanyl] Captopril (Proline 2,5,5-d3) Stable Isotopes CS-T-97126 Not Available Enquire
S-[3-(N-(Ethyl-d5)maleimide)] Captopril Stable Isotopes CS-T-97519 Not Available Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Captopril API Standards CS-O-01051 62571-86-2 In Stock


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-[(2R)-3-(acetylthio)-2-methyl-1-oxopropyl]-D-Proline Impurities CS-O-07525 224626-08-8 Enquire
Captopril Acid Amine Salt Impurities CS-O-07517 Not Available Enquire
Captopril EP Impurity A Impurities CS-O-07518 64806-05-9 In Stock
Captopril EP Impurity B Impurities CS-O-07519 80629-35-2 Enquire
Captopril EP Impurity D Impurities CS-O-07521 56970-78-6 In Stock
Captopril EP Impurity E Impurities CS-O-07522 23500-15-4 In Stock
Captopril EP Impurity F Impurities CS-O-07523 63250-36-2 In Stock
Captopril EP Impurity G Impurities CS-O-07524 33325-40-5 In Stock
Captopril EP Impurity H Impurities CS-P-07438 205521-07-9 Enquire
Captopril EP Impurity I Impurities CS-EO-00111 Not Available Enquire
Captopril EP Impurity L Impurities CS-EO-00112 Not Available Enquire
Captopril EP Impurity M Impurities CS-EO-00113 Not Available Enquire
Captopril EP Impurity O Impurities CS-EO-00114 Not Available Enquire
Captopril Ethyl Ester Impurities CS-O-07526 86938-12-7 Enquire
Captopril Impurity 2 Impurities CS-P-08706 1249080-59-8 Enquire
Captopril Impurity N Impurities CS-P-07437 65134-74-9 Enquire
Captopril RC 7 Impurities CS-T-95914 214193-11-0 Enquire
D-Captopril Impurities CS-O-39157 119238-52-7 Enquire
S-[3-(N-Ethylmaleimide)] Captopril Impurities CS-T-74159 185804-96-0 Enquire
S-Nitrosocaptopril Impurities CS-T-82821 122130-63-6 Enquire


EP Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Captopril for system suitability (Y0001182) EP Standards CS-EG-00256 62571-86-2 Enquire
Captopril impurity B (Y0001219) EP Standards CS-EG-00251 80629-35-2 Enquire
Captopril impurity C (Y0001220) EP Standards CS-EG-00252 26473-47-2 Enquire
Captopril impurity D (Y0001221) EP Standards CS-EG-00253 56970-78-6 Enquire
Captopril impurity E (Y0000435) EP Standards CS-EG-00254 23500-15-4 Enquire
Captopril impurity J (Y0001450) EP Standards CS-EG-00255 64838-55-7 Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3-Mercaptoisobutyric Acid Intermediates CS-O-07520 26473-47-2 In Stock


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
captopril-cysteine Fine Chemicals CS-O-33583 75479-46-8 Enquire