Letrozole Impurity – A
4,4'-[(4H-1,2,4-triazol-4-yl)methylene]dibenzonitrile
| Chemical Name | 4,4'-[(4H-1,2,4-triazol-4-yl)methylene]dibenzonitrile |
|---|---|
| CAS No. | 112809-52-6 |
| Molecular Formula | C17H11N5 |
| Molecular Weight | 285.31 |
| Chemical Structure |
![4,4'-[(4H-1,2,4-triazol-4-yl)methylene]dibenzonitrile Structure](https://bhavanishlifesciences.com/wp-content/uploads/2026/09/letrozole-impurity-a-structure.png) |
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Letrozole Impurity – A
Letrozole Impurity – A is documented as a related substance of Letrozole in pharmaceutical quality control as per EP pharmacopoeial requirements. Chemically, it is described as 4,4′-[(4H-1,2,4-triazol-4-yl)methylene]dibenzonitrile. It has the molecular formula C17H11N5 and a molecular weight of 285.31 g/mol. It serves as a critical reference material for identifying and quantifying related substances during Letrozole manufacturing and stability testing. Available with a Certificate of Analysis (CoA) as a high-purity reference standard suitable for HPLC and LC-MS applications.
Letrozole impurities reference standards are useful in pharmaceutical research. They are useful in product development, ANDA and DMF filing, Quality control (QC), method validation, and stability studies. It is also useful in the identification of unknown impurities and the assessment of genotoxic potential.
We are the BHAVANISH LIFE SCIENCES specializes in manufacturing and supplying of Letrozole impurities that meet specific pharmacopeial standards (USP/EP/BP/IP) as well as process-related impurities.
This related products or Impurities are thoroughly characterized. Supplied with detailed COA & analytical data Like NMR / MASS / HPLC / GC / IR / TGA / Potency / Structure elucidation data (SER Report) meeting regulatory compliance.
BHAVANISH LIFE SCIENCES provides this compound for research and development and Analytical testing use only, and is not meant for human consumption. With product information including CAS number, molecular formula, molecular weight details.
BHAVANISH LIFE SCIENCES in providing high-quality impurity standards to support pharmaceutical companies in maintaining drug safety and efficacy.
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