Impurities
AY-0041-003
Letrozole EP Impurity B
C22H13N3
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Active ingredient reference standard
Letrozole
Material overview
Letrozole (AY-0041-001) — active ingredient reference standard. CAS 112809-51-5, formula C17H11N5, molecular weight 285.30 g/mol. Request technical documentation and current availability.
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Technical identifiers
- Catalog number
- AY-0041-001
- CAS number
- 112809-51-5
- Molecular formula
- C17H11N5
- Molecular weight
- 285.30 g/mol
- Category
- Active ingredient reference standard
- Chemical name
- Benzonitrile,4,4`-(1H-1,2,4-triazol-1-ylmethylene)bis
- Synonyms
- Femara; Lerozole; Letrazole; Benzonitrile; 4,4`-(1H-1,2,4-Triazol-1-ylmethylene)dibenzonitrile
- SMILES
- N#CC1=CC=C(C=C1)C(N2C=NC=N2)C3=CC=C(C#N)C=C3
- Appearance
- White to Off-White Solid
- Light sensitive
- No
- Hygroscopic
- No
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Storage
Refrigerator
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