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Pharmacopeial Impurities (EP / USP / BP)Reference StandardAvailable on request

Clopidogrel EP Impurity E

Synonyms: Clopidogrel Amide Impurity · (S)-2-(2-Chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetamide · (S)-(+)-(2-chlorophenyl)-(6,7-dihydro-4H-thieno[3,2-c]pyrid-5-yl)acetamide · Clopidogrel amide

CAS No.444728-13-6
FormulaC15H15ClN2OS
Mol. weight306.80
Catalogue No.VQ-029897
PurityReference Standard
HSN38229090

Clopidogrel EP Impurity E (CAS 444728-13-6) – Clopidogrel impurity standard. C15H15ClN2OS, MW 306.8. From Vaqora Chemicals, with COA and worldwide delivery.

Pack sizesPrice on quotation · bulk available
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25 mg
50 mg
100 mg
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16-section GHS SDS
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About Clopidogrel EP Impurity E

Clopidogrel EP Impurity E (CAS 444728-13-6) is a pharmacopeial impurity of Clopidogrel offered by Vaqora Chemicals. Its molecular formula is C15H15ClN2OS and its molecular weight is 306.8 g/mol. Its systematic (IUPAC) name is (2S)-2-(2-chlorophenyl)-2-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)acetamide. It is also known as Clopidogrel Amide Impurity or Clopidogrel amide.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

As a characterised impurity of Clopidogrel, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies Clopidogrel EP Impurity E in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

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Related to Clopidogrel

View every impurity, metabolite and intermediate we list for Clopidogrel.

Clopidogrel impurities

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Specifications & identifiers

Chemical identifiers
Product nameClopidogrel EP Impurity E
Catalogue No.VQ-029897
CAS Number444728-13-6
IUPAC name(2S)-2-(2-chlorophenyl)-2-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)acetamide
Molecular formulaC15H15ClN2OS
Molecular weight306.8 g/mol
Exact mass306.0594
GradeReference Standard
HSN code38229090
InChIKeySRKXAUBVRPEIQR-AWEZNQCLSA-N
SMILESC1CN(CC2=C1SC=C2)[C@@H](C3=CC=CC=C3Cl)C(=O)N
PubChem CID9944392
Physical properties
Physical formSolid
LogP (XLogP3)2.8
H-bond donors / acceptors1 / 3
TPSA74.6 Ų
SynonymsClopidogrel Amide Impurity, (S)-2-(2-Chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetamide, (S)-(+)-(2-chlorophenyl)-(6,7-dihydro-4H-thieno[3,2-c]pyrid-5-yl)acetamide, Clopidogrel amide, (+)-(S)-2-(2-chlorophenyl)-(6,7-dihydro-4H-thieno[3,2-c]pyrid-5yl)acetamide, (alphaS)-alpha-(2-Chlorophenyl)-6,7-dihydrothieno[3,2-c]pyridine-5(4H)-acetamide, (s)-(+)-(2-chloro-phenyl)-(6,7-dihydro-4h-thieno[3,2-c]pyrid-5-yl)acetamide, (S)-(+)-(2-chlorophenyl)(6,7-dihydro-4H-thieno[3,2-c]pyrid-5-yl)acetamide, 2-(2-Chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetamide, (S)-, Thieno[3,2-c]pyridine-5(4H)-acetamide, alpha-(2-chlorophenyl)-6,7-dihydro-, (alphaS)-

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Frequently asked questions

What is the CAS number of Clopidogrel EP Impurity E?

The CAS Registry Number of Clopidogrel EP Impurity E is 444728-13-6. It is also known as Clopidogrel Amide Impurity, (S)-2-(2-Chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetamide, (S)-(+)-(2-chlorophenyl)-(6,7-dihydro-4H-thieno[3,2-c]pyrid-5-yl)acetamide.

What is the molecular formula and molecular weight of Clopidogrel EP Impurity E?

Clopidogrel EP Impurity E has the molecular formula C15H15ClN2OS and a molecular weight of 306.8 g/mol. Its IUPAC name is (2S)-2-(2-chlorophenyl)-2-(6,7-dihydro-4H-thieno[3,2-c]pyridin-5-yl)acetamide.

What is Clopidogrel EP Impurity E used for?

Clopidogrel EP Impurity E is supplied as a characterised reference material related to Clopidogrel. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of Clopidogrel EP Impurity E can I order?

We supply Clopidogrel EP Impurity E in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Clopidogrel EP Impurity E?

Yes. Every lot of Clopidogrel EP Impurity E is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Clopidogrel EP Impurity E be shipped internationally?

Yes. We export Clopidogrel EP Impurity E worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.

Enquire about Clopidogrel EP Impurity E

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Why buyers choose Vaqora

  • Batch-traceable lots with COA
  • R&D packs to multi-tonne supply
  • IATA / IMDG dangerous-goods packing
  • EXW, FOB, CIF, DAP Incoterms
  • Custom synthesis & sourcing
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