Macitentan Impurity 33 CAS 1642873-05-9

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.1642873-05-9
Molecular FormulaC16H11Br2ClN4O2
Molecular Weight486.55 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Macitentan Impurity 33 CAS 1642873-05-9 chemical structure

Description

Macitentan Impurity 33 (CAS 1642873-05-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C16H11Br2ClN4O2. Molecular weight: 486.55 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.

Physical & Chemical Properties

Molecular FormulaC16H11Br2ClN4O2
Molecular Weight486.55 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity>95%
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)12.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1993
Halogen ContentCl/Br-containing
Nitrogen Atoms4

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