7-Amino-3 chloromethyl-3-cephem-4-carboxylic Acid p-Methoxybenzyl Ester Hydrochloride
- CAS
- 113479-65-5
- Formula
- C16H18Cl2N2O4S
- MW
- 405.3 g/mol
ZX-038919
Impurity reference standards
Cefazolin impurity standards
For Cefazolin, the Zemixal catalogue holds 18 impurity and reference standards that support release testing, stability programmes and regulatory dossiers. Counted by type, there are 9 pharmacopoeial impurities.
18reference materials
9pharmacopoeial
Every standard comes with a certificate of analysis. Structure confirmation data, typically NMR, MS and chromatographic purity, is available on request. They are bought for system suitability, peak identification, quantitation against limits and the impurity justification sections of regulatory submissions.
By impurity type
Pharmacopoeial9EP, USP, BP or JP named impurities
Counts are based on product names. One compound can fall into more than one type.
All Cefazolin reference materials
1–18 of 18 standards
Des[(5-methyl-1,3,4-thiadiazol-2-yl)thio] Cefazolin-3-methanol
- CAS
- 478494-71-2
- Formula
- C11H12N6O5S
- MW
- 340.32 g/mol
ZX-021100
Questions
Cefazolin impurities, answered
What Cefazolin reference materials are available?
The catalogue currently lists 18 compounds for Cefazolin, including 9 pharmacopoeial impurities. Each product page shows the CAS number where one is assigned, the structure, formula and molecular weight.
What documents come with a Cefazolin impurity standard?
A certificate of analysis travels with every lot. On request we share the characterisation set, usually 1H-NMR, mass spectrum, HPLC purity and IR, and for some materials TGA or water content. Ask for the data before ordering if your QA team needs to review it.
Can Zemixal make a Cefazolin impurity that is not listed?
Often yes. Send the structure, name or CAS number with the quantity you need and our sourcing team checks custom synthesis options, usually from 10 mg up to gram scale, with a quoted lead time.