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Pharmacopeial Impurities (EP / USP / BP)

Allopurinol EP Impurity D

Reference StandardAvailable on request

Allopurinol EP Impurity D (CAS 6994-25-8) supplier Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-020547.

Pack sizes
Allopurinol EP Impurity D chemical structure
CAS number6994-25-8
FormulaC6H9N3O2
Molar mass155.15 g/mol
Physical formSolid
HS code38229090
InChIKeyYPXGHKWOJXQLQU-UHFFFAOYSA-N
IUPAC nameethyl 5-amino-1H-pyrazole-4-carboxylate

About Allopurinol EP Impurity D

Allopurinol EP Impurity D is supplied by Zemixal as a characterised reference material for Allopurinol analysis. For your records (Reference Standard), the material is defined by CAS 6994-25-8, formula C6H9N3O2 and molar mass 155.15 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, H317, H319 and H400). 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. Every shipment includes a certificate of analysis with characterisation data. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Allopurinol

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

Allopurinol 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 Allopurinol EP Impurity D
Product nameAllopurinol EP Impurity D
Catalogue numberZX-020547
CAS number6994-25-8
IUPAC nameethyl 5-amino-1H-pyrazole-4-carboxylate
Molecular formulaC6H9N3O2
Molar mass155.15 g/mol
Exact mass155.0695
GradeReference Standard
Physical formSolid
XLogP30.6
H-bond donors / acceptors2 / 4
Topological polar surface area81 Ų
HS code38229090
InChIKeyYPXGHKWOJXQLQU-UHFFFAOYSA-N
SMILESCCOC(=O)C1=C(NN=C1)N
PubChem CID81472
SynonymsAllopurinol - Impurity D, allopurinol USP rc d, Ethyl 3-amino-1H-pyrazole-4-carboxylate, ethyl APC, Ethyl 3-amino-4-pyrazolecarboxylate, 3-Amino-4-carbethoxypyrazole, 5-Amino-1H-pyrazole-4-carboxylic acid ethyl ester, ethyl 5-aminopyrazole-4-carboxylate, Ethyl 3-aminopyrazole-4-carboxylate, 3-amino-1H-pyrazole-4-carboxylic acid ethyl ester, 3-Amino-4-ethoxycarbonylpyrazole, 3-Amino-4-carbethoxypyrazol

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
GHS09 Hazardous to the environment
Hazardous to the environment

Signal word Warning

  • H302Harmful if swallowed
  • H317May cause an allergic skin reaction
  • H319Causes serious eye irritation
  • H400Very toxic to aquatic life
  • H410Very toxic to aquatic life with long lasting effects

Precautionary statements P261, P264, P264 + P265, P270, P272, P273, P280, P301 + P317, P302 + P352, P305 + P351 + P338, P321, P330, P333 + P317, P337 + P317, P362 + P364, P391, 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 Allopurinol EP Impurity D
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 Allopurinol EP Impurity D

Which CAS number identifies Allopurinol EP Impurity D?
Allopurinol EP Impurity D is registered under CAS 6994-25-8. You may also see it listed as Allopurinol - Impurity D, allopurinol USP rc d, Ethyl 3-amino-1H-pyrazole-4-carboxylate. Our catalogue number for this item is ZX-020547.
What are the formula and molar mass of Allopurinol EP Impurity D?
For Allopurinol EP Impurity D, its formula is C6H9N3O2 and its molar mass is 155.15 g/mol. The systematic (IUPAC) name is ethyl 5-amino-1H-pyrazole-4-carboxylate. InChIKey YPXGHKWOJXQLQU-UHFFFAOYSA-N lets you match it in any structure database.
How is Allopurinol EP Impurity D used in pharmaceutical QC?
Allopurinol EP Impurity D is a characterised reference material linked to Allopurinol. 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 Allopurinol EP Impurity D?
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 Allopurinol EP Impurity D?
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 Allopurinol EP Impurity D to my country?
Yes. Because Allopurinol EP Impurity D 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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