Impurity reference standards
Fosaprepitant impurity standards
13 characterised compounds linked to Fosaprepitant are catalogued here, from named pharmacopoeial impurities to synthesis intermediates and breakdown products. The list is made up mainly of process impurities, positional isomers and intermediates from common synthetic routes.
13reference materials
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.
All Fosaprepitant reference materials
1–13 of 13 standards
(3-(((2S,3S)-2-((R)-1-(3,5-Bis(trifluoromethyl)phenyl)ethoxy)-3-(4-fluorophenyl)morpholino)methyl)-5-oxo-4,5-dihydro-1H-1,2,4-triazol-1-yl)phosphonic acid
- CAS
- 172822-01-4
- Formula
- C23H22F7N4O6P
- MW
- 614.41 g/mol
ZX-039200
Fosaprepitant Dimeglumine Desfluoro Impurity
- CAS
- 2975348-16-2
- Formula
- C37H57F6N6O16P
- MW
- 986.8 g/mol
ZX-004778
Fosaprepitant Dimeglumine Dibenzylester Impurity
- CAS
- 265121-01-5
- Formula
- C37H34F7N4O6P
- MW
- 794.6 g/mol
ZX-004779
Fosaprepitant Dimeglumine Impurity F (Dimeglumine salt)
- CAS
- 2035475-11-5
- Formula
- C44H62F7N6O16P
- MW
- 1095 g/mol
ZX-004781
Questions
Fosaprepitant impurities, answered
How many Fosaprepitant impurity standards does Zemixal list?
The catalogue currently lists 13 compounds for Fosaprepitant. Each product page shows the CAS number where one is assigned, the structure, formula and molecular weight.
What documents come with a Fosaprepitant 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 Fosaprepitant 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.