Impurity reference standards
Letrozole impurity standards
10 characterised compounds linked to Letrozole are catalogued here, from named pharmacopoeial impurities to synthesis intermediates and breakdown products. Highlights of the range are 2 pharmacopoeial impurities.
10reference materials
2pharmacopoeial
Every standard comes with a certificate of analysis. Structure confirmation data, typically NMR, MS and chromatographic purity, is available on request. They are bought for system suitability, peak identification, quantitation against limits and the impurity justification sections of regulatory submissions.
By impurity type
Pharmacopoeial2EP, USP, BP or JP named impurities
Counts are based on product names. One compound can fall into more than one type.
All Letrozole reference materials
1–10 of 10 standards
Questions
Letrozole impurities, answered
How many Letrozole impurity standards does Zemixal list?
The catalogue currently lists 10 compounds for Letrozole, including 2 pharmacopoeial impurities. Each product page shows the CAS number where one is assigned, the structure, formula and molecular weight.
What documents come with a Letrozole impurity standard?
A certificate of analysis travels with every lot. On request we share the characterisation set, usually 1H-NMR, mass spectrum, HPLC purity and IR, and for some materials TGA or water content. Ask for the data before ordering if your QA team needs to review it.
Can Zemixal make a Letrozole impurity that is not listed?
Often yes. Send the structure, name or CAS number with the quantity you need and our sourcing team checks custom synthesis options, usually from 10 mg up to gram scale, with a quoted lead time.