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Pharmacopeial Impurities (EP / USP / BP)

Cefaclor EP Impurity B

Reference StandardAvailable on request

Order Cefaclor EP Impurity B (CAS 53994-69-7) online at Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-020139.

Pack sizes
Cefaclor EP Impurity B chemical structure
CAS number53994-69-7
FormulaC7H7ClN2O3S
Molar mass234.66 g/mol
Physical formSolid
HS code38229090
InChIKeyOQSAFIZCBAZPMY-AWFVSMACSA-N
IUPAC name(6R,7R)-7-amino-3-chloro-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

About Cefaclor EP Impurity B

Cefaclor EP Impurity B is supplied by Zemixal as a characterised reference material for Cefaclor analysis. Key data (Reference Standard): CAS 53994-69-7, formula C7H7ClN2O3S and molar mass 234.66 g/mol. It is handled as a solid.

Typical applications

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

Handling and storage

Hazard communication follows GHS (Danger: H317 and H334). Our SDS lists exposure controls and first-aid measures.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. Every shipment includes a certificate of analysis with characterisation data. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Cefaclor

See every impurity, metabolite and related compound we list for this API.

Cefaclor standards

Typical uses

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

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Cefaclor EP Impurity B
Product nameCefaclor EP Impurity B
Catalogue numberZX-020139
CAS number53994-69-7
IUPAC name(6R,7R)-7-amino-3-chloro-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Molecular formulaC7H7ClN2O3S
Molar mass234.66 g/mol
Exact mass233.9866
GradeReference Standard
Physical formSolid
XLogP3-2.8
H-bond donors / acceptors2 / 5
Topological polar surface area109 Ų
HS code38229090
InChIKeyOQSAFIZCBAZPMY-AWFVSMACSA-N
SMILESC1C(=C(N2[C@H](S1)[C@@H](C2=O)N)C(=O)O)Cl
PubChem CID6998927
SynonymsCefaclor - Impurity B, 7-Amino-3-chlorocephalosporanic Acid, 3-Chloro-7-amino-3-cephem-4-carboxylic Acid, (6R-trans)-7-Amino-3-chloro-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, (6R-trans)-7-amino-3-chloro-8-oxo-5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid, 7beta-amino-3-chloro-3-cephem-4-carboxylic acid, (6R,7R)-7-Amino-3-chloro-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-Amino-3-Chloro Cephalosporanic Acid, (6R,7R)-7-Ammonio-3-chloro-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate, 5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid,7-amino-3-chloro-8-oxo-, (6R,7R)-, (6R,7R)-7-azaniumyl-3-chloro-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate, 7-Amino-3-Chloro Cephalosporanic Acid(7-ACCA )

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS08 Health hazard
Health hazard

Signal word Danger

  • H317May cause an allergic skin reaction
  • H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

Precautionary statements P233, P260, P261, P271, P272, P280, P284, P302 + P352, P304 + P340, P321, P333 + P317, P342 + P316, P362 + P364, P403, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Cefaclor EP Impurity B
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Cefaclor EP Impurity B

Which CAS number identifies Cefaclor EP Impurity B?
Cefaclor EP Impurity B is registered under CAS 53994-69-7. You may also see it listed as Cefaclor - Impurity B, 7-Amino-3-chlorocephalosporanic Acid, 3-Chloro-7-amino-3-cephem-4-carboxylic Acid. Our catalogue number for this item is ZX-020139.
What are the formula and molar mass of Cefaclor EP Impurity B?
For Cefaclor EP Impurity B, its formula is C7H7ClN2O3S and its molar mass is 234.66 g/mol. The systematic (IUPAC) name is (6R,7R)-7-amino-3-chloro-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid. InChIKey OQSAFIZCBAZPMY-AWFVSMACSA-N lets you match it in any structure database.
How is Cefaclor EP Impurity B used in pharmaceutical QC?
Cefaclor EP Impurity B is a characterised reference material linked to Cefaclor. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Cefaclor EP Impurity B?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Cefaclor EP Impurity B?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Cefaclor EP Impurity B to my country?
Yes. Because Cefaclor EP Impurity B is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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