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Pharmacopeial Impurities (EP / USP / BP)

Zidovudine EP Impurity B

Reference StandardAvailable on request

Zidovudine EP Impurity B (CAS 25526-94-7) supplier Zemixal: C10H13ClN2O4, COA and SDS with every lot, worldwide shipping.

Pack sizes
Zidovudine EP Impurity B chemical structure
CAS number25526-94-7
FormulaC10H13ClN2O4
Molar mass260.67 g/mol
Physical formSolid
HS code38229090
InChIKeyKQVJDKGDGLWBQT-XLPZGREQSA-N
IUPAC name1-[(2R,4S,5R)-4-chloro-5-(hydroxymethyl)oxolan-2-yl]-5-methylpyrimidine-2,4-dione

About Zidovudine EP Impurity B

Analytical teams working on Zidovudine use Zidovudine EP Impurity B as a qualified comparison standard. Identity at a glance (Reference Standard): CAS 25526-94-7, formula C10H13ClN2O4 and molar mass 260.67 g/mol. It is handled as a solid.

Use cases we see most often

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

Storage and safety notes

Hazard communication follows GHS (Warning: H302 and H373). Our SDS lists exposure controls and first-aid measures.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. Each lot travels with a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

Reference standards for Zidovudine

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

Zidovudine 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 Zidovudine EP Impurity B
Product nameZidovudine EP Impurity B
Catalogue numberZX-023061
CAS number25526-94-7
IUPAC name1-[(2R,4S,5R)-4-chloro-5-(hydroxymethyl)oxolan-2-yl]-5-methylpyrimidine-2,4-dione
Molecular formulaC10H13ClN2O4
Molar mass260.67 g/mol
Exact mass260.0564
GradeReference Standard
Physical formSolid
H-bond donors / acceptors2 / 4
Topological polar surface area78.9 Ų
HS code38229090
InChIKeyKQVJDKGDGLWBQT-XLPZGREQSA-N
SMILESCC1=CN(C(=O)NC1=O)[C@H]2C[C@@H]([C@H](O2)CO)Cl
PubChem CID72249
SynonymsZidovudine - Impurity B, Zidovudine USP Related Compound B, 3'-Chloro-3'-deoxythymidine, Thymidine, 3'-chloro-3'-deoxy-, 1-(3-Chloro-2,3-dideoxy-beta-D-erythro-pentofuranosyl)-5-methylpyrimidine-2,4(1H,3H)-dione, 3'-deoxy-3'-chlorothymidine, 3'-Desoxy-3'-chlor-thymidin, 3'-Cl-ddT, Zidovudine impurity B RS, 3'-chloro-3'-deoxy-thymidine, 3'-Chloro-2',3'-dideoxythymidine

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

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful
GHS08 Health hazard
Health hazard

Signal word Warning

  • H302Harmful if swallowed
  • H373May causes damage to organs through prolonged or repeated exposure

Precautionary statements P260, P264, P270, P301 + P317, P319, P330, 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 Zidovudine 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 Zidovudine EP Impurity B

Which CAS number identifies Zidovudine EP Impurity B?
Zidovudine EP Impurity B is registered under CAS 25526-94-7. You may also see it listed as Zidovudine - Impurity B, Zidovudine USP Related Compound B, 3'-Chloro-3'-deoxythymidine. Our catalogue number for this item is ZX-023061.
What are the formula and molar mass of Zidovudine EP Impurity B?
For Zidovudine EP Impurity B, its formula is C10H13ClN2O4 and its molar mass is 260.67 g/mol. The systematic (IUPAC) name is 1-[(2R,4S,5R)-4-chloro-5-(hydroxymethyl)oxolan-2-yl]-5-methylpyrimidine-2,4-dione. InChIKey KQVJDKGDGLWBQT-XLPZGREQSA-N lets you match it in any structure database.
How is Zidovudine EP Impurity B used in pharmaceutical QC?
Zidovudine EP Impurity B is a characterised reference material linked to Zidovudine. 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 Zidovudine 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 Zidovudine 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 Zidovudine EP Impurity B to my country?
Yes. Because Zidovudine 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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