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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
2-Oxo Clopidogrel-d3 Stable Isotopes CS-T-94982 2714408-91-8 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 Thiol Metabolite H4 Isomer-13C,d3 Stable Isotopes CS-O-50579 1801260-45-6(Unlabelled) Enquire
Clopidogrel-13C,d4 Thiol Metabolite 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,d3 Stable Isotopes CS-T-51224 1346597-76-9 In Stock
rac Clopidogrel Hydrogen Sulfate-d9 (Major) Stable Isotopes CS-T-95542 ---- 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
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
(E)-MPB derivatised Clopidogrel AM metabolite hydrochloride ... Stable Isotopes CS-EK-00610 1122047-98-6 Unlabeled free base 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
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 Thiol Metabolite (mixture of diastereomers) 13C6 Stable Isotopes CS-EK-00368 767612-34-0 unlabeled Enquire
Clopidogrel, racemic mixture 13C6 Stable Isotopes CS-EK-00025 90055-48-4 unlabeled Enquire
rac Clopidogrel-d8 Hydrogen Sulfate (Major) Stable Isotopes CS-T-90548 1346598-07-9 Enquire
rac-Clopidogrel-d4 Carboxylic Acid Stable Isotopes CS-T-95072 1246814-52-7 Enquire
trans-Clopidogrel-MP-13C,d3 Ethyl Ester Derivative (Mixture ... Stable Isotopes CS-T-91077 1331383-23-3 Enquire


API

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


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Oxo Clopidogrel Hydrochloride Metabolite CS-T-60069 1219432-42-4 In Stock
Clopidogrel active metabolite Mixture Metabolite CS-O-54129 ----- Enquire
Clopidogrel Carboxylic Acid Metabolite CS-O-06012 144457-28-3 In Stock
Clopidogrel Carboxylic Acid N-Oxide Metabolite CS-O-45946 Not Available Enquire
Clopidogrel carboxylic acid sodium salt Metabolite CS-O-06010 929250-04-4 In Stock
Clopidogrel Ethyl Ester Sulfate Metabolite CS-P-07397 1332612-57-3 Enquire
Clopidogrel N-Oxide Metabolite CS-O-49011 1319197-71-1 Enquire
Clopidogrel Thiol Metabolite H1 Isomer Trifluoroacetic acid Metabolite CS-T-91647 1801260-46-7 Enquire
Clopidogrel Thiol Metabolite H2 Isomer Trifluoroacetic acid Metabolite CS-T-89210 1801260-47-8 Enquire
Clopidogrel thiol metabolite H4 Metabolite CS-EO-02279 Not Available Enquire
Clopidogrel Thiol Metabolite H4 Isomer Metabolite CS-O-56165 317322-48-8 Enquire
rac-Clopidogrel Acid N-Oxide Metabolite CS-O-49015 Not Available Enquire
trans-Clopidogrel Thiol Metabolite Metabolite CS-O-11282 767612-34-0 Enquire
(E)-MPB derivatised Clopidogrel AM metabolite hydrochloride ... Metabolite CS-EK-02049 1122047-98-6 free base Enquire
Clopidogrel active metabolite Metabolite CS-ED-02284 1148015-30-8 Enquire
Clopidogrel hydrogensulfate Metabolite CS-EK-00765 120202-66-6 Enquire
Clopidogrel Metabolite II Metabolite CS-P-07398 1287430-40-3 Enquire
Clopidogrel Thiol Metabolite H3 Isomer Formate Salt Metabolite CS-T-91459 1801260-44-5 Enquire
Clopidogrel Thiol Metabolite TFA salt (mixture of diastereom... Metabolite CS-EK-01232 767612-34-0 free base Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(2R,2'R)-dimethyl 2,2'-((thiophene-2,3-diylbis(ethane-2,1-di... Impurity CS-O-49802 Not Available Enquire
(2R,2'R)-dimethyl 2,2'-((thiophene-3,4-diylbis(ethane-2,1-di... Impurity CS-O-49801 Not Available Enquire
(2S,2'R)-dimethyl 2,2'-((thiophene-2,5-diylbis(ethane-2,1-di... Impurity CS-O-49794 Not Available Enquire
(2S,2'R)-dimethyl 2,2'-(3,4,6,7-tetrahydrothieno[3,2-c:4,5-c... Impurity CS-O-49799 Not Available Enquire
(R)-2-(2-chlorophenyl)-2-((2-(4-(2-(((R)-1-(2-chlorophenyl)-... Impurity CS-O-49804 Not Available Enquire
(R)-Clopidogrel EP Impurity E Impurity CS-O-49010 444728-15-8 Enquire
(R)-methyl 2-(2-chlorophenyl)-2-((2-(thiophen-2-yl)ethyl)ami... Impurity CS-O-44626 141109-23-1 Enquire
(S)-methyl 2-(3-chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyr... Impurity CS-O-49805 Not Available Enquire
(S)-methyl 2-(4-chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyr... Impurity CS-O-49806 Not Available Enquire
(S)-methyl 2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)-2-ph... Impurity CS-O-49808 Not Available Enquire
(S)-methyl 2-amino-2-(2-chlorophenyl)acetate (2R,3R)-2,3-dih... Impurity CS-O-47902 Not Available Enquire
2-(2-chlorophenyl)-2-((2-(thiophen-2-yl)ethyl)amino)acetic a... Impurity CS-O-47903 Not Available Enquire
2-Oxo Clopidogrel (Mixture of Diastereomers) Impurity CS-T-60070 109904-27-0 Enquire
2-Oxo R-Clopidogrel Impurity CS-O-56477 1360923-54-1 Enquire
Clopidogrel Besylate Impurity CS-O-01191 744256-69-7 In Stock
Clopidogrel Camphorsulfonate Impurity CS-ED-01224 120202-68-8 In Stock
Clopidogrel EP Impurity A Impurity CS-O-31057 144750-42-5 In Stock
Clopidogrel EP Impurity B Impurity CS-O-45205 1396841-05-6 Enquire
Clopidogrel EP Impurity B Hydrochloride Impurity CS-P-07396 1396607-35-4 Enquire
Clopidogrel EP Impurity C Impurity CS-O-07683 120202-71-3 In Stock
Clopidogrel EP Impurity F Hydrochloride Impurity CS-T-61999 141109-19-5 In Stock
Clopidogrel Impurity 17 Impurity CS-O-56498 1896709-41-3 Enquire
Clopidogrel Impurity 18 Impurity CS-O-54020 61285-69-6 Enquire
Clopidogrel Impurity 2 Bromide (Clopidogrel Iminium Impurity... Impurity CS-O-56649 ---- Enquire
Clopidogrel Impurity 31 HCl Salt Impurity CS-O-56672 ---- Enquire
Clopidogrel Impurity 33 Impurity CS-O-31554 40412-06-4 In Stock
Clopidogrel Impurity 34 Sulfate Impurity CS-O-56674 ---- Enquire
Clopidogrel Impurity 36 Formate Impurity CS-O-57396 2646700-00-5 (Freebase) Enquire
Clopidogrel Impurity 4 Impurity CS-O-56473 801319-16-4 Enquire
Clopidogrel Impurity B Impurity CS-EO-00754 402746-56-9 In Stock
Clopidogrel Impurity E (Clopidogrel Sulfonated Impurity) Impurity CS-P-08196 2173294-69-2 Enquire
Clopidogrel Open Ring R-enantiomer Impurity CS-O-48032 ‭1258938-54-3‬ Enquire
Clopidogrel Oxidative (Impurity-F) Impurity CS-EO-01036 1030894-82-6 In Stock
Clopidogrel Pyridinium Bromide Impurity Impurity CS-O-38459 1396607-49-0 In Stock
Clopidogrel Related Compound B Impurity CS-O-07682 144750-52-7 In Stock
Clopidogrel Related Compound C Impurity CS-O-48388 2637140-93-1 Enquire
Clopidogrel Related compound D Impurity CS-O-50614 Not Available Enquire
Clopidogrel Thieno Impurity Hydrochloride Impurity CS-O-07687 28783-41-7 In Stock
Clopidogrel Thienylethyl Impurity Hydrochloride Impurity CS-O-07688 141109-20-8 In Stock
Clopidogrel Thiol Metabolite H4 Isomer Formate Impurity CS-T-89454 1801260-45-6 Enquire
Hydroxymethyl Clopidogrel Bisulphate Impurity CS-O-58477 1346231-35-3 Enquire
Methyl 2-(2-chlorophenyl)-2-((2-(thiophen-3-yl)ethyl)amino)a... Impurity CS-O-47909 Not Available Enquire
Methyl 2-(4-chlorophenyl)-2-((2-(thiophen-2-yl)ethyl)amino)a... Impurity CS-O-47910 Not Available Enquire
N-Methyl Clopidogrel Impurity I Impurity CS-P-07395 1346605-15-9 In Stock
Open Ring N-Methyl Clopidogrel Hydrochloride Impurity CS-O-49014 1346605-15-9 (Freebase) Enquire
rac-Clopidogrel Iminium bromide Impurity Impurity CS-O-49013 2418591-12-3 Enquire
R-Clopidogrel Carboxylic Acid Impurity CS-I-00004 324757-50-8 Enquire
R-Clopidogrel N-Oxide Impurity CS-O-56648 ---- Enquire
Ticlopidine Pyridinium Bromide Impurity CS-O-49012 2418591-13-4 Enquire
(2-chlorophenyl){[2-(thiophen-2-yl)ethyl]amino} acetonitrile Impurity CS-O-40357 216249-33-1 Enquire
(R)-methyl 2-(2-chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyr... Impurity CS-O-34750 Not Available Enquire
(S)-methyl 2-(2-chlorophenyl)-2-((2-(thiophen-3-yl)ethyl)ami... Impurity CS-O-33920 1314028-89-1 Enquire
(S,S)-cis-Clopidogrel-MP Derivative Impurity CS-TB-01720 1430373-12-8 Enquire
2-(2-Chlorophenyl)-2-((2-(thiophen-2-yl)ethyl)amino)acetic a... Impurity CS-O-40515 1015247-86-5 Enquire
2-(thiophen-2-yl)ethyl benzenesulfonate Impurity CS-O-38149 85567-51-7 Enquire
cis-Clopidogrel Glutathione Disulfide Impurity CS-T-51226 1118605-95-0 Enquire
cis-Clopidogrel-MP Derivative (Pair of Enantiomers) Impurity CS-T-93567 1122047-98-6 Enquire
Clopidogrel 2-Methoxysulphonyl impurity Impurity CS-O-40264 Not Available Enquire
Clopidogrel 3-Sulfonated Impurity Impurity CS-O-37878 Not Available Enquire
Clopidogrel carboxylic acid HCl Salt Impurity CS-O-16006 1015247-88-7 Enquire
Clopidogrel Cyano Racemate Impurity CS-O-07680 444728-11-4 Enquire
Clopidogrel EP Impurity D Impurity CS-O-07684 1421283-60-4 Enquire
Clopidogrel EP Impurity E Impurity CS-EO-00386 90055-68-8 Enquire
Clopidogrel Ethyl Ester Analog (HCl Salt) Impurity CS-O-35856 Not Available Enquire
Clopidogrel Hydroxy Impurity Impurity CS-O-07685 32345-60-1 Enquire
Clopidogrel Impurity 3 Impurity CS-S-00051 141109-18-4 Enquire
Clopidogrel Impurity 30 Impurity CS-P-08766 131202-62-5 Enquire
Clopidogrel Impurity 7 Impurity CS-P-07402 444728-13-6 Enquire
Clopidogrel Impurity CHOX Impurity CS-EO-00763 1251822-13-5 Enquire
Clopidogrel Pyridinium Bromide Impurity Impurity CS-O-07686 1396607-49-0 Enquire
Clopidogrel R-Isomer Impurity CS-O-36392 113665-84-2 Enquire
Ethyl-S-(+)-Clopidogrel Sulfate Impurity CS-T-54416 1357474-92-0 Enquire
methyl 2-(2-chlorophenyl)-2-(4,5-dihydrothieno[2,3-c]pyridin... Impurity CS-O-34749 Not Available Enquire
rac Clopidogrel [(tert-Butylcarbonyl)oxy]methyl Ester Impurity CS-T-91010 1043913-82-1 Enquire
rac-Clopidogrel Carboxylic Acid Impurity CS-T-91417 90055-55-3 Enquire
rac-Clopidogrel Iminium Impurity Impurity CS-O-33446 1251736-87-4 Enquire
rac-Clopidogrel-MP Endo Derivative Impurity CS-T-51223 1346598-12-6 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(R)-(-)-2-Chloromandelic Acid Intermediate CS-T-50785 52950-18-2 Enquire
(S)-methyl 2-amino-2-phenylacetate hydrochloride Intermediate CS-O-49807 15028-39-4 Enquire
2,4-Thiophenediethanol Intermediate CS-O-49803 Not Available Enquire
3,4-Thiophenediethanol Intermediate CS-O-49800 1261445-71-9 Enquire
4,5,6,7-Tetrahydrothieno[2,3-c]pyridine Hydrochloride Intermediate CS-M-47990 28783-38-2 In Stock
Methyl a-Bromo-2-chlorophenylacetate Intermediate CS-M-57994 85259-19-4 In Stock
Quinoxaline Intermediate CS-M-58146 91-19-0 In Stock
trans-Clopidogrel-MP Ethyl Ester Derivative (Mixture of Dias... Intermediate CS-T-90439 1331383-19-7 Enquire


Glucuronide

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Clopidogrel acyl-O-beta-D-Glucuronide Glucuronide 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
2,4,6-Trichlorphenyl glycine Fine Chemicals CS-O-37810 1336899-26-3 Enquire
Cis-2,6,8-trimethyl-non-5-en-4-one Fine Chemicals CS-O-37094 61301-31-3 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(S)-Methyl 2-amino-2-(4-chlorophenyl)acetate Building Blocks CS-O-45524 43189-44-2 Enquire
D-(2-CHLOROPHENYL)GLYCINE Building Blocks CS-BX-02540 86169-24-6 Enquire
Methyl(S)-2-amino-2-(3-chlorophenyl)acetate Building Blocks CS-O-45523 1212881-18-9 Enquire