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Pharmacopeial Impurities (EP / USP / BP)

Azathioprine EP Impurity A

Reference StandardAvailable on request

Order Azathioprine EP Impurity A (CAS 4531-54-8) online at Zemixal: C4H6N4O2, COA and SDS with every lot, worldwide shipping.

Pack sizes
Azathioprine EP Impurity A chemical structure
CAS number4531-54-8
FormulaC4H6N4O2
Molar mass142.12 g/mol
Physical formSolid
HS code38229090
InChIKeyGJVMTMXQJDQJSS-UHFFFAOYSA-N
IUPAC name3-methyl-5-nitroimidazol-4-amine

About Azathioprine EP Impurity A

Azathioprine EP Impurity A is supplied by Zemixal as a characterised reference material for Azathioprine analysis. Identity at a glance (Reference Standard): CAS 4531-54-8, formula C4H6N4O2 and molar mass 142.12 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

Safe handling

Classified under GHS with signal word Danger and hazard statements H302, H315, H319 and H335. Read the SDS before first use.

Available as 10 mg, 25 mg, 50 mg and 100 mg. Larger or split packs can be arranged. 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 Azathioprine

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

Azathioprine 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 Azathioprine EP Impurity A
Product nameAzathioprine EP Impurity A
Catalogue numberZX-019921
CAS number4531-54-8
IUPAC name3-methyl-5-nitroimidazol-4-amine
Molecular formulaC4H6N4O2
Molar mass142.12 g/mol
Exact mass142.0491
GradeReference Standard
Physical formSolid
XLogP3-0.5
H-bond donors / acceptors1 / 4
Topological polar surface area89.7 Ų
HS code38229090
InChIKeyGJVMTMXQJDQJSS-UHFFFAOYSA-N
SMILESCN1C=NC(=C1N)[N+](=O)[O-]
PubChem CID20625
SynonymsAzathioprine - Impurity A, 5-amino-1-methyl-4-nitroimidazole, 1H-Imidazol-5-amine, 1-methyl-4-nitro-, 1H-Imidazol-5-amine,1-methyl-4-nitro-(9CI), 3-methyl-5-nitro-imidazol-4-amine, Azathioprine impurity A, 3-Methyl-5-nitro-3H-imidazol-4-ylamine, 1-methyl-4-nitroimidazole-5-ylamine, 5-amino-1-methyl-4-nitroimid-azole, (3-methyl-5-nitro-imidazol-4-yl)amine, 1-Methyl-4-nitro-1H-imidazol-5-amine #, 1-Methyl-4-nitro-1H-imidazol-5-amine (Azathioprine Impurity)

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 Danger

  • H302Harmful if swallowed
  • H315Causes skin irritation
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation
  • H340May cause genetic defects
  • H350May cause cancer
  • H360May damage fertility or the unborn child

Precautionary statements P203, P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P318, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, 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 Azathioprine EP Impurity A
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 Azathioprine EP Impurity A

Which CAS number identifies Azathioprine EP Impurity A?
Azathioprine EP Impurity A is registered under CAS 4531-54-8. You may also see it listed as Azathioprine - Impurity A, 5-amino-1-methyl-4-nitroimidazole, 1H-Imidazol-5-amine, 1-methyl-4-nitro-. Our catalogue number for this item is ZX-019921.
What are the formula and molar mass of Azathioprine EP Impurity A?
For Azathioprine EP Impurity A, its formula is C4H6N4O2 and its molar mass is 142.12 g/mol. The systematic (IUPAC) name is 3-methyl-5-nitroimidazol-4-amine. InChIKey GJVMTMXQJDQJSS-UHFFFAOYSA-N lets you match it in any structure database.
How is Azathioprine EP Impurity A used in pharmaceutical QC?
Azathioprine EP Impurity A is a characterised reference material linked to Azathioprine. 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 Azathioprine EP Impurity A?
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 Azathioprine EP Impurity A?
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 Azathioprine EP Impurity A to my country?
Yes. Because Azathioprine EP Impurity A 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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