Letrozole Impurity 13
Impurity reference standard · Letrozole
- CAS number
- —
- Molecular formula
- C17H11N5O2
- Molecular weight
- 317.30
- Purity
- 95%+
- Storage
- 2℃ ~ 8℃
About Letrozole Impurity 13
Letrozole Impurity 13 is a specified impurity of Letrozole. It has no single publicly registered CAS number, so it is defined by the structure and molecular formula below.
The compound is characterised by its molecular formula C17H11N5O2 and a molecular weight of 317.30, with the two-dimensional structure shown above. Because it shares the Letrozole scaffold, it is typically used to track process-related and degradation impurities of Letrozole during method development, forced degradation and stability studies.
Each pack ships with a certificate of analysis reporting purity of 95%+ together with the supporting analytical data — HNMR, MS and HPLC or GC traces — so the material can be released straight into your own QC workflow. Recommended storage: 2℃ ~ 8℃.
Available from stock in milligram to gram quantities; larger or custom synthesis requirements are quoted on request.
Other Letrozole impurities
The same parent compound, neighbouring impurity numbers.
Need this standard, or a related one?
Send the compound name, CAS number or a structure file — we confirm availability, pack size and lead time, usually within one business day.