Impurities
AY-0041-002
Letrozole EP Impurity A
C17H11N5
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Impurity reference standard material
Letrozole EP Impurity B
Material overview
Letrozole EP Impurity B (AY-0041-003) — impurity reference standard material. CAS 113402-31-6, formula C22H13N3, molecular weight 319.40 g/mol. Request technical documentation and current availability.
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Technical identifiers
- Catalog number
- AY-0041-003
- CAS number
- 113402-31-6
- Molecular formula
- C22H13N3
- Molecular weight
- 319.40 g/mol
- Category
- Impurity reference standard material
- Chemical name
- 4-[bis(4-cyanophenyl)methyl]benzonitrile
- Synonyms
- Methanetriyltribenzonitrile; 4,4',4''-; 4,4',4''-Methanetriyltribenzonitrile (USP)
- SMILES
- C1=CC(=CC=C1C#N)C(C2=CC=C(C=C2)C#N)C3=CC=C(C=C3)C#N
- Appearance
- Off-White to Light Yellow Solid
- Light sensitive
- No
- Hygroscopic
- No
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Storage
Refrigerator
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