Impurity reference standards
Antipyrine impurities & reference standards
Characterised Antipyrine impurities, degradation products and related compounds for analytical method development, validation, QC release and regulatory filings.
7reference materials
2nitrosamine impurities
1isotope-labelled
COAHPLC · NMR · MS on request
FAQs — Antipyrine impurities
Which Antipyrine impurities do you supply?
We list 7 Antipyrine-related reference materials, including process impurities, degradation products, nitrosamine impurities, 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 Antipyrine 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 Antipyrine 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 Antipyrine impurity standards
We reply within one business day with price, pack options, lead time and documentation.