Letrozole Impurity 39 CAS 28188-41-2

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.28188-41-2
Molecular FormulaC8H6BrN
Molecular Weight196.04 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Letrozole Impurity 39 CAS 28188-41-2 chemical structure

Description

Letrozole Impurity 39 (CAS 28188-41-2) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C8H6BrN. Molecular weight: 196.04 g/mol. Each batch is supplied with a Certificate of Analysis (COA).

Physical & Chemical Properties

Molecular FormulaC8H6BrN
Molecular Weight196.04 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor)
Purity>95%
StorageStore at 2-8°C, protect from light, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1965
Halogen ContentBr-containing
Nitrogen Atoms1

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