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Metabolites & Degradation Products

3-Desmethyl Trimethoprim

Reference StandardAvailable on request

Order 3-Desmethyl Trimethoprim (CAS 27653-69-6) online at Zemixal. Request a quote with price, lead time and documents. Packs from 10 mg.

Pack sizes
3-Desmethyl Trimethoprim chemical structure
CAS number27653-69-6
FormulaC13H16N4O3
Molar mass276.29 g/mol
Physical formSolid
HS code38229090
InChIKeyHWBPOLWLLFXEJY-UHFFFAOYSA-N
IUPAC name5-[(2,4-diaminopyrimidin-5-yl)methyl]-2,3-dimethoxyphenol

About 3-Desmethyl Trimethoprim

3-Desmethyl Trimethoprim is supplied by Zemixal as a characterised reference material for Trimethoprim analysis. Identity at a glance (Reference Standard): CAS 27653-69-6, formula C13H16N4O3 and molar mass 276.29 g/mol. It is handled as a solid.

Common uses in the lab and plant

  • Metabolite identification
  • Stability-indicating methods
  • Impurity profiling

Handling and storage

Classified under GHS with signal word Warning and hazard statements H302, H361, H373 and H411. 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. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Trimethoprim

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

Trimethoprim standards

Typical uses

  • Metabolite identification
  • Stability-indicating methods
  • Impurity profiling

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Specifications and identifiers

Specifications of 3-Desmethyl Trimethoprim
Product name3-Desmethyl Trimethoprim
Catalogue numberZX-043001
CAS number27653-69-6
IUPAC name5-[(2,4-diaminopyrimidin-5-yl)methyl]-2,3-dimethoxyphenol
Molecular formulaC13H16N4O3
Molar mass276.29 g/mol
Exact mass276.1222
GradeReference Standard
Physical formSolid
H-bond donors / acceptors3 / 7
Topological polar surface area117 Ų
HS code38229090
InChIKeyHWBPOLWLLFXEJY-UHFFFAOYSA-N
SMILESCOC1=CC(=CC(=C1OC)O)CC2=CN=C(N=C2N)N
PubChem CID12849769
Synonyms3'-Hydroxytrimethoprim, 3-Demethyltrimethoprim, 3-Demethyl-trimethoprim, 2,4-diamino-5-(3-hydroxy-4,5-dimethoxybenzyl)pyrimidine, 5-((2,4-Diamino-5-pyrimidinyl)methyl)-2,3-dimethoxyphenol, Phenol, 5-((2,4-diamino-5-pyrimidinyl)methyl)-2,3-dimethoxy-, Phenol, 5-[(2,4-diamino-5-pyrimidinyl)methyl]-2,3-dimethoxy-, 5-((2,4-Diaminopyrimidin-5-yl)methyl)-2,3-dimethoxyphenol, 2,4-diamino-5-(3-hydroxy-4,5-dimethoxy-benzyl)pyrimidine

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
GHS09 Hazardous to the environment
Hazardous to the environment

Signal word Warning

  • H302Harmful if swallowed
  • H361Suspected of damaging fertility or the unborn child
  • H373May causes damage to organs through prolonged or repeated exposure
  • H411Toxic to aquatic life with long lasting effects

Precautionary statements P203, P260, P264, P270, P273, P280, P301 + P317, P318, P319, P330, P391, 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 3-Desmethyl Trimethoprim
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 3-Desmethyl Trimethoprim

Which CAS number identifies 3-Desmethyl Trimethoprim?
3-Desmethyl Trimethoprim is registered under CAS 27653-69-6. You may also see it listed as 3'-Hydroxytrimethoprim, 3-Demethyltrimethoprim, 3-Demethyl-trimethoprim. Our catalogue number for this item is ZX-043001.
What are the formula and molar mass of 3-Desmethyl Trimethoprim?
For 3-Desmethyl Trimethoprim, its formula is C13H16N4O3 and its molar mass is 276.29 g/mol. The systematic (IUPAC) name is 5-[(2,4-diaminopyrimidin-5-yl)methyl]-2,3-dimethoxyphenol. InChIKey HWBPOLWLLFXEJY-UHFFFAOYSA-N lets you match it in any structure database.
How is 3-Desmethyl Trimethoprim used in pharmaceutical QC?
3-Desmethyl Trimethoprim 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 3-Desmethyl Trimethoprim?
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 3-Desmethyl Trimethoprim?
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 3-Desmethyl Trimethoprim to my country?
Yes. Because 3-Desmethyl Trimethoprim 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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