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Pharmacopeial Impurities (EP / USP / BP)

Trimethoprim EP Impurity B

Reference StandardAvailable on request

Trimethoprim EP Impurity B (CAS 30806-86-1) supplier Zemixal: C14H16N4O4, COA and SDS with every lot, worldwide shipping.

Pack sizes
Trimethoprim EP Impurity B chemical structure
CAS number30806-86-1
FormulaC14H16N4O4
Molar mass304.3 g/mol
Physical formSolid
HS code38229090
InChIKeyGAAPPIKAFNZRLA-UHFFFAOYSA-N
IUPAC name(2,4-diaminopyrimidin-5-yl)-(3,4,5-trimethoxyphenyl)methanone

About Trimethoprim EP Impurity B

Zemixal lists Trimethoprim EP Impurity B for laboratories that identify, quantify or control Trimethoprim and its related substances. Key data (Reference Standard): CAS 30806-86-1, formula C14H16N4O4 and molar mass 304.3 g/mol. It is handled as a solid.

Typical applications

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

Storage and safety notes

It carries the GHS signal word Danger (H301 and H302), so wear gloves and eye protection and work with good ventilation.

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 Trimethoprim

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

Trimethoprim 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 Trimethoprim EP Impurity B
Product nameTrimethoprim EP Impurity B
Catalogue numberZX-027431
CAS number30806-86-1
IUPAC name(2,4-diaminopyrimidin-5-yl)-(3,4,5-trimethoxyphenyl)methanone
Molecular formulaC14H16N4O4
Molar mass304.3 g/mol
Exact mass304.1172
GradeReference Standard
Physical formSolid
XLogP31.3
H-bond donors / acceptors2 / 8
Topological polar surface area123 Ų
HS code38229090
InChIKeyGAAPPIKAFNZRLA-UHFFFAOYSA-N
SMILESCOC1=CC(=CC(=C1OC)OC)C(=O)C2=CN=C(N=C2N)N
PubChem CID13734023
SynonymsTrimethoprim - Impurity B, Trimethoprim Keto Analogue, 5-(3,4,5-Trimethoxybenzoyl)-2,4-pyrimidinediamine, (2,4-Diaminopyrimidin-5-yl)(3,4,5-trimethoxyphenyl)methanone, Keto trimethoprim, Methanone, (2,4-diamino-5-pyrimidinyl)(3,4,5-trimethoxyphenyl)-, Trimethoprim Impurity B, 2,4-diamino-5-(3,4,5-trimethoxybenzoyl)pyrimidine

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

Safety and GHS hazards

GHS06 Acute toxicity
Acute toxicity
GHS07 Irritant or harmful
Irritant or harmful
GHS08 Health hazard
Health hazard

Signal word Danger

  • H301Toxic if swallowed
  • H302Harmful if swallowed

Precautionary statements P203, P264, P270, P280, P301 + P316, P301 + P317, P318, P321, P330, 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 Trimethoprim 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 Trimethoprim EP Impurity B

Which CAS number identifies Trimethoprim EP Impurity B?
Trimethoprim EP Impurity B is registered under CAS 30806-86-1. You may also see it listed as Trimethoprim - Impurity B, Trimethoprim Keto Analogue, 5-(3,4,5-Trimethoxybenzoyl)-2,4-pyrimidinediamine. Our catalogue number for this item is ZX-027431.
What are the formula and molar mass of Trimethoprim EP Impurity B?
For Trimethoprim EP Impurity B, its formula is C14H16N4O4 and its molar mass is 304.3 g/mol. The systematic (IUPAC) name is (2,4-diaminopyrimidin-5-yl)-(3,4,5-trimethoxyphenyl)methanone. InChIKey GAAPPIKAFNZRLA-UHFFFAOYSA-N lets you match it in any structure database.
How is Trimethoprim EP Impurity B used in pharmaceutical QC?
Trimethoprim EP Impurity B is a characterised reference material linked to Trimethoprim. 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 Trimethoprim 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 Trimethoprim 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 Trimethoprim EP Impurity B to my country?
Yes. Because Trimethoprim 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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