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

Clopidogrel Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"[13C6]-Clopidogrel, racemic mixture" Stable Isotopes CS-EK-00025 90055-48-4 unlabeled Enquire
(E)-MPB derivatised Clopidogrel AM metabolite hydrochloride ... Stable Isotopes CS-EK-00610 1122047-98-6 Unlabeled free base Enquire
[13C6]-Clopidogrel Thiol Metabolite (mixture of diastereomer... Stable Isotopes CS-EK-00368 767612-34-0 unlabeled Enquire
2-Oxo Clopidogrel-13C,d3 Hydrochloride (Mixture of Diastereo... Stable Isotopes CS-T-83884 1794713-84-0 Enquire
2-Oxo-Clopidogrel-d4 Stable Isotopes CS-P-07399 109904-27-0 (Unlabeled) Enquire
cis-Clopidogrel-MP-13C,d3 Derivative Stable Isotopes CS-T-94564 Not Available Enquire
cis-Clopidogrel-MP-13C,d3 Derivative(Pair of Enantiomers) Stable Isotopes CS-T-97679 Not Available Enquire
Clopidogrel D4 Stable Isotopes CS-O-51809 113665-84-2(Unlabelled) Enquire
Clopidogrel 13C D4 Hydrochloride Stable Isotopes CS-O-47495 Not Available Enquire
Clopidogrel 13CD3 Stable Isotopes CS-O-35616 113665-84-2 (unlabeled) Enquire
Clopidogrel 13CD3 Hydrogen Sulfate Stable Isotopes CS-T-51221 1246814-55-0 Enquire
Clopidogrel Amide-d4 Stable Isotopes CS-T-91767 1219423-91-2 Enquire
Clopidogrel carboxylic acid D4 Stable Isotopes CS-Y-00105 1217614-64-6 Enquire
Clopidogrel Carboxylic acid D4 Hydrochloride Stable Isotopes CS-O-06501 1246814-52-7(Freebase) Enquire
Clopidogrel carboxylic acid, racemic mixture 13C6 Stable Isotopes CS-EK-00189 90055-55-3 unlabeled Enquire
Clopidogrel hydrogensulfate 13C6 Stable Isotopes CS-EK-01235 120202-66-6 unlabeled Enquire
Clopidogrel-13C Stable Isotopes CS-BU-00137 767612-34-0 (Unlabelled) In Stock
Clopidogrelat-13C-d4 Stable Isotopes CS-BU-00031 144457-28-3 (unlabeled) Enquire
Clopidogrel-d3 Hydrochloride Stable Isotopes CS-O-06499 120202-65-5 (Unlabelled) In Stock
Clopidogrel-d3 Hydrogen Sulphate Stable Isotopes CS-O-06502 1217643-68-9 In Stock
Clopidogrel-d4 Hydrogensulfate Stable Isotopes CS-O-02930 1219274-96-0 In Stock
Clopidogrel-MP Endo Derivative-13C Stable Isotopes CS-T-51224 1346597-76-9 In Stock
rac Clopidogrel Hydrogen Sulfate-d9 (Major) Stable Isotopes CS-T-95542 Not Available Enquire
rac Clopidogrel-d8 Hydrogen Sulfate (Major) Stable Isotopes CS-T-90548 1346598-07-9 Enquire
rac-Clopidogrel-d3 Bisulfate Stable Isotopes CS-O-44803 Not Available Enquire
rac-Clopidogrel-d3 Hydrogen Sulfate Stable Isotopes CS-T-94844 Not Available Enquire
rac-Clopidogrel-d4 Carboxylic Acid Stable Isotopes CS-T-95072 1246814-52-7 Enquire
trans-Clopidogrel-d3 Thiol Metabolite (Mixture of Diastereom... Stable Isotopes CS-T-94846 767612-34-0(Unlabelled) Enquire
trans-Clopidogrel-MP-13C,d3 Derivative(Mixture of Diastereom... Stable Isotopes CS-T-94845 Not Available Enquire
trans-Clopidogrel-MP-13C,d3 Ethyl Ester Derivative (Mixture ... Stable Isotopes CS-T-91077 1331383-23-3 Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Clopidogrel API Standards CS-O-15507 113665-84-2 In Stock
Clopidogrel bisulfate API Standards CS-ED-01031 120202-66-6 Enquire
Clopidogrel Bisulphate API Standards CS-O-07679 120202-66-6 In Stock
Clopidogrel Hydrochloride API Standards CS-O-01126 90055-48-4 In Stock
Clopidogrel hydrogen sulfate API Standards CS-O-10233 135046-48-9 In Stock
Clopidogrelum API Standards CS-ZG-11788 90055-48-4 Enquire


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(E)-MPB derivatised Clopidogrel AM metabolite hydrochloride ... Metabolites CS-EK-02049 1122047-98-6 free base Enquire
2-Oxo Clopidogrel Hydrochloride Metabolites CS-T-60069 1219432-42-4 In Stock
Clopidogrel active metabolite Metabolites CS-ED-02284 1148015-30-8 Enquire
Clopidogrel active metabolite Mixture Metabolites CS-O-54129 Not Available Enquire
Clopidogrel Carboxylic Acid Metabolites CS-O-06012 144457-28-3 In Stock
Clopidogrel Carboxylic Acid N-Oxide Metabolites CS-O-45946 Not Available Enquire
Clopidogrel carboxylic acid sodium salt Metabolites CS-O-06010 929250-04-4 In Stock
Clopidogrel Ethyl Ester Sulfate Metabolites CS-P-07397 1332612-57-3 Enquire
Clopidogrel hydrogensulfate Metabolites CS-EK-00765 120202-66-6 Enquire
Clopidogrel Metabolite II Metabolites CS-P-07398 1287430-40-3 Enquire
Clopidogrel N-Oxide Metabolites CS-O-49011 1319197-71-1 Enquire
Clopidogrel Thiol Metabolite H3 Isomer Formate Salt Metabolites CS-T-91459 1801260-44-5 Enquire
Clopidogrel thiol metabolite H4 Metabolites CS-EO-02279 Not Available Enquire
Clopidogrel Thiol Metabolite H4 Isomer Metabolites CS-O-56165 317322-48-8 Enquire
Clopidogrel Thiol Metabolite TFA salt (mixture of diastereom... Metabolites CS-EK-01232 767612-34-0 free base Enquire
rac-Clopidogrel Acid N-Oxide Metabolites CS-O-49015 Not Available Enquire
trans-Clopidogrel Thiol Metabolite Metabolites CS-O-11282 767612-34-0 Enquire


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(2R,2'R)-dimethyl 2,2'-((thiophene-2,3-diylbis(ethane-2,1-di... Impurities CS-O-49802 Not Available Enquire
(2S,2'R)-dimethyl 2,2'-((thiophene-2,5-diylbis(ethane-2,1-di... Impurities CS-O-49794 Not Available Enquire
(R)-Clopidogrel EP Impurity E Impurities CS-O-49010 444728-15-8 Enquire
(R)-methyl 2-(2-chlorophenyl)-2-((2-(thiophen-2-yl)ethyl)ami... Impurities CS-O-44626 141109-23-1 Enquire
(R)-methyl 2-(2-chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyr... Impurities CS-O-34750 Not Available Enquire
(S)-methyl 2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-2-ph... Impurities CS-O-49808 Not Available Enquire
(S,S)-cis-Clopidogrel-MP Derivative Impurities CS-TB-01720 1430373-12-8 Enquire
2-Oxo R-Clopidogrel Impurities CS-O-56477 1360923-54-1 Enquire
cis-Clopidogrel Glutathione Disulfide Impurities CS-T-51226 1118605-95-0 Enquire
cis-Clopidogrel-MP Derivative (Pair of Enantiomers) Impurities CS-T-93567 1122047-98-6 Enquire
Clopidogrel 3-Sulfonated Impurity Impurities CS-O-37878 Not Available Enquire
Clopidogrel Besylate Impurities CS-O-01191 744256-69-7 In Stock
Clopidogrel Camphorsulfonate Impurities CS-ED-01224 120202-68-8 In Stock
Clopidogrel carboxylic acid HCl Salt Impurities CS-O-16006 1015247-88-7 Enquire
Clopidogrel Cyano Racemate Impurities CS-O-07680 444728-11-4 Enquire
Clopidogrel EP Impurity A Impurities CS-O-31057 144750-42-5 In Stock
Clopidogrel EP Impurity B Impurities CS-O-45205 1396841-05-6 Enquire
Clopidogrel EP Impurity B Hydrochloride Impurities CS-P-07396 1396607-35-4 Enquire
Clopidogrel EP Impurity C Impurities CS-O-07683 120202-71-3 In Stock
Clopidogrel EP Impurity D Impurities CS-O-07684 1421283-60-4 Enquire
Clopidogrel EP Impurity E Impurities CS-EO-00386 90055-68-8 Enquire
Clopidogrel EP Impurity F Hydrochloride Impurities CS-T-61999 141109-19-5 In Stock
Clopidogrel Ethyl Ester Analog (HCl Salt) Impurities CS-O-35856 Not Available Enquire
Clopidogrel Hydroxy Impurity Impurities CS-O-07685 32345-60-1 Enquire
Clopidogrel Impurity 17 Impurities CS-O-56498 1896709-41-3 Enquire
Clopidogrel Impurity 18 Impurities CS-O-54020 61285-69-6 Enquire
Clopidogrel Impurity 2 Bromide (Clopidogrel Iminium Impurity... Impurities CS-O-56649 Not Available Enquire
Clopidogrel Impurity 3 Impurities CS-S-00051 141109-18-4 Enquire
Clopidogrel Impurity 30 Impurities CS-P-08766 131202-62-5 Enquire
Clopidogrel Impurity 31 HCl Salt Impurities CS-O-56672 Not Available Enquire
Clopidogrel Impurity 34 Sulfate Impurities CS-O-56674 Not Available Enquire
Clopidogrel Impurity 36 Formate Impurities CS-O-57396 2646700-00-5 (Freebase) Enquire
Clopidogrel Impurity 4 Impurities CS-O-56473 801319-16-4 Enquire
Clopidogrel Impurity 7 Impurities CS-P-07402 444728-13-6 Enquire
Clopidogrel Impurity B Impurities CS-EO-00754 402746-56-9 In Stock
Clopidogrel Impurity CHOX Impurities CS-EO-00763 1251822-13-5 Enquire
Clopidogrel Impurity D Sulfate Impurities CS-P-07400 1421283-60-4 Enquire
Clopidogrel Impurity E (Clopidogrel Sulfonated Impurity) Impurities CS-P-08196 2173294-69-2 Enquire
Clopidogrel Open Ring R-enantiomer Impurities CS-O-48032 1258938-54-3 Enquire
Clopidogrel Oxidative (Impurity-F) Impurities CS-EO-01036 1030894-82-6 In Stock
Clopidogrel Pyridinium Bromide Impurity Impurities CS-O-38459 1396607-49-0 In Stock
Clopidogrel Pyridinium Bromide Impurity Impurities CS-O-07686 1396607-49-0 Enquire
Clopidogrel Related Compound B Impurities CS-O-07682 144750-52-7 In Stock
Clopidogrel Related Compound C Impurities CS-O-48388 2637140-93-1 Enquire
Clopidogrel Related compound D Impurities CS-O-50614 Not Available Enquire
Clopidogrel R-Isomer Impurities CS-O-36392 113665-84-2 Enquire
Clopidogrel Thieno Impurity Hydrochloride Impurities CS-O-07687 28783-41-7 In Stock
Clopidogrel Thienylethyl Impurity Hydrochloride Impurities CS-O-07688 141109-20-8 In Stock
Ethyl-S-(+)-Clopidogrel Sulfate Impurities CS-T-54416 1357474-92-0 Enquire
methyl 2-(2-chlorophenyl)-2-(4,5-dihydrothieno[2,3-c]pyridin... Impurities CS-O-34749 Not Available Enquire
N-Methyl Clopidogrel Impurity I Impurities CS-P-07395 1346605-15-9 In Stock
Open Ring N-Methyl Clopidogrel Hydrochloride Impurities CS-O-49014 1346605-15-9 (Freebase) Enquire
rac Clopidogrel [(tert-Butylcarbonyl)oxy]methyl Ester Impurities CS-T-91010 1043913-82-1 Enquire
rac-Clopidogrel Carboxylic Acid Impurities CS-T-91417 90055-55-3 Enquire
rac-Clopidogrel Iminium bromide Impurity Impurities CS-O-49013 2418591-12-3 Enquire
rac-Clopidogrel-MP Endo Derivative Impurities CS-T-51223 1346598-12-6 Enquire
R-Clopidogrel Carboxylic Acid Impurities CS-I-00004 324757-50-8 Enquire
R-Clopidogrel N-Oxide Impurities CS-O-56648 Not Available Enquire
Ticlopidine Pyridinium Bromide Impurities CS-O-49012 2418591-13-4 Enquire


EP Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Clopidogrel besilate (Y0001852) EP Standards CS-EG-00384 744256-69-7 Enquire
Clopidogrel for system suitability (Y0001334) EP Standards CS-EG-00385 120202-66-6 In Stock
Clopidogrel impurity A (Y0001335) EP Standards CS-EG-00386 Not Available Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(+/-)-Clopidogrel hydrochloride Intermediates CS-T-90091 130209-90-4 Enquire
2,4-Thiophenediethanol Intermediates CS-O-49803 Not Available Enquire
2-Oxo Clopidogrel (Mixture of Diastereomers) Intermediates CS-T-60070 109904-27-0 Enquire
2-Oxo Clopidogrel Carboxylic Acid Intermediates CS-T-60067 109904-36-1 Enquire
3,4-Thiophenediethanol Intermediates CS-O-49800 1261445-71-9 Enquire
4,5,6,7-TETRAHYDROTHIENO[2,3-C]PYRIDINE HYDROCHLORIDE Intermediates CS-M-47990 28783-38-2 In Stock
Clopidogrel Impurity 33 Intermediates CS-O-31554 40412-06-4 In Stock
Clopidogrel Thiol Metabolite H1 Isomer TFA Salt Intermediates CS-T-91647 1801260-46-7 Enquire
Clopidogrel Thiol Metabolite H2 Isomer TFA Salt Intermediates CS-T-89210 1801260-47-8 Enquire
Clopidogrel Thiol Metabolite H4 Isomer Formate Salt Intermediates CS-T-89454 1801260-45-6 Enquire
Methyl a-Bromo-2-chlorophenylacetate Intermediates CS-M-57994 85259-19-4 In Stock
Quinoxaline Intermediates CS-M-58146 91-19-0 In Stock
trans-Clopidogrel-MP Ethyl Ester Derivative (Mixture of Dias... Intermediates CS-T-90439 1331383-19-7 Enquire


Glucuronides

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Clopidogrel acyl-O-beta-D-Glucuronide Glucuronides CS-O-05709 1314116-53-4 In Stock


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Clopidogrel Impurity 28 Fine Chemicals CS-O-56668 131770-31-5 Enquire