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Pharmacopeial Impurities (EP / USP / BP)

Dacarbazine EP Impurity A

Reference StandardAvailable on request

Buy Dacarbazine EP Impurity A (CAS 4656-86-4) from Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-021329.

Pack sizes
Dacarbazine EP Impurity A chemical structure
CAS number4656-86-4
FormulaC4H3N5O
Molar mass137.1 g/mol
Physical formSolid
HS code38229090
InChIKeyBTERLCQQBYXVIN-UHFFFAOYSA-N
IUPAC name3,5-dihydroimidazo[4,5-d]triazin-4-one

About Dacarbazine EP Impurity A

Dacarbazine EP Impurity A belongs to the Dacarbazine reference-standard family in the Zemixal catalogue. Key data (Reference Standard): CAS 4656-86-4, formula C4H3N5O and molar mass 137.1 g/mol. It is handled as a solid.

Common uses in the lab and plant

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

Safe handling

Hazard communication follows GHS (Warning: H341 and H351). Our SDS lists exposure controls and first-aid measures.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. Each lot travels with a certificate of analysis with characterisation data. Request pricing online and we confirm availability, documentation and freight to your country.

Reference standards for Dacarbazine

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

Dacarbazine 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 Dacarbazine EP Impurity A
Product nameDacarbazine EP Impurity A
Catalogue numberZX-021329
CAS number4656-86-4
IUPAC name3,5-dihydroimidazo[4,5-d]triazin-4-one
Molecular formulaC4H3N5O
Molar mass137.1 g/mol
Exact mass137.0338
GradeReference Standard
Physical formSolid
XLogP30.2
H-bond donors / acceptors2 / 4
Topological polar surface area82.5 Ų
HS code38229090
InChIKeyBTERLCQQBYXVIN-UHFFFAOYSA-N
SMILESC1=NC2=C(N1)C(=O)NN=N2
PubChem CID135421876
SynonymsTemozolomide EP Impurity E, Dacarbazine - Impurity A, Temozolomide 2-Azahypoxanthine Impurity, Temozolomide - Impurity E, 2-Azahypoxanthine, 3,7-Dihydro-4H-imidazo[4,5-d]-1,2,3-triazin-4-one, 3,5-dihydroimidazo(4,5-d)triazin-4-one, 1,5-dihydro-4H-imidazo[4,5-d]-1,2,3-triazin-4-one, Dacarbazine Impurity A, 3H-Imidazo[4,5-d][1,2,3]triazin-4(7H)-one, 3H,4H,7H-imidazo[4,5-d][1,2,3]triazin-4-one, 3,7-dihydro-4H-imidazo[4,5-d][1,2,3]triazin-4-one

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 Warning

  • H341Suspected of causing genetic defects
  • H351Suspected of causing cancer

Precautionary statements P203, P280, P318, 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 Dacarbazine 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 Dacarbazine EP Impurity A

Which CAS number identifies Dacarbazine EP Impurity A?
Dacarbazine EP Impurity A is registered under CAS 4656-86-4. You may also see it listed as Temozolomide EP Impurity E, Dacarbazine - Impurity A, Temozolomide 2-Azahypoxanthine Impurity. Our catalogue number for this item is ZX-021329.
What are the formula and molar mass of Dacarbazine EP Impurity A?
For Dacarbazine EP Impurity A, its formula is C4H3N5O and its molar mass is 137.1 g/mol. The systematic (IUPAC) name is 3,5-dihydroimidazo[4,5-d]triazin-4-one. InChIKey BTERLCQQBYXVIN-UHFFFAOYSA-N lets you match it in any structure database.
How is Dacarbazine EP Impurity A used in pharmaceutical QC?
Dacarbazine EP Impurity A is a characterised reference material linked to Dacarbazine. 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 Dacarbazine 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 Dacarbazine 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 Dacarbazine EP Impurity A to my country?
Yes. Because Dacarbazine 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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