2-Amino-5-(4-hydroxy-3,5- dimethoxybenzyl)pyrimidin-4-ol
- CAS
- 72920-13-9
- Formula
- C13H15N3O4
- MW
- 277.28 g/mol
VQ-034442
Impurity reference standards
Trimethoprim impurities & reference standards
Characterised Trimethoprim impurities, degradation products and related compounds for analytical method development, validation, QC release and regulatory filings.
19reference materials
2isotope-labelled
COAHPLC · NMR · MS on request
3-Dimethylamino-2-(3,4,5-trimethoxybenzyl)acrylonitrile
- CAS
- 30077-85-1
- Formula
- C15H20N2O3
- MW
- 276.33 g/mol
VQ-034446
4-((2,4-Diaminopyrimidin-5-yl)methyl)-2,6-dimethoxyphenol
- CAS
- 21253-58-7
- Formula
- C13H16N4O3
- MW
- 276.29 g/mol
VQ-034445
N4-Methyl-5-(3,4,5-trimethoxybenzyl)-pyrimidine-2,4-diamine
- CAS
- 92653-78-6
- Formula
- C15H20N4O3
- MW
- 304.34 g/mol
VQ-043852
FAQs — Trimethoprim impurities
Which Trimethoprim impurities do you supply?
We list 19 Trimethoprim-related reference materials, including process impurities, degradation products, stable-isotope-labelled standards and related compounds. Each is supplied with a COA, and characterisation data (HPLC, 1H-NMR, MS, IR) can be provided on request.
What are Trimethoprim impurity standards used for?
They are used for analytical method development and validation, impurity identification and quantification, forced-degradation and stability studies, and to support ANDA, DMF and other regulatory submissions under ICH Q3A/Q3B (and ICH M7 for mutagenic impurities).
Can you synthesise a Trimethoprim impurity that is not listed?
Yes. Our custom synthesis service can prepare and characterise unlisted impurities, metabolites and labelled analogues from milligram to gram scale. Share the structure or name and required quantity for a quotation.
Request Trimethoprim impurity standards
We reply within one business day with price, pack options, lead time and documentation.