Impurities
AY-0041-003
Letrozole EP Impurity B
C22H13N3
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Impurity reference standard material
Letrozole EP Impurity A
Material overview
Letrozole EP Impurity A (AY-0041-002) — impurity reference standard material. CAS 112809-52-6, formula C17H11N5, molecular weight 285.30 g/mol. Request technical documentation and current availability.
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Technical identifiers
- Catalog number
- AY-0041-002
- CAS number
- 112809-52-6
- Molecular formula
- C17H11N5
- Molecular weight
- 285.30 g/mol
- Category
- Impurity reference standard material
- Chemical name
- 4,4`-(1H-1,3,4-Triazol-1-ylmethylene)dibenzonitrile
- Synonyms
- Letrozole USP Related Compound A
- SMILES
- N#CC1=CC=C(C=C1)C(N2C=NN=C2)C3=CC=C(C#N)C=C3
- Appearance
- Pale Yellow Solid
- Light sensitive
- No
- Hygroscopic
- No
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Storage
Refrigerator
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