Remimazolam Impurity 12 CAS 308243-65-4

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.308243-65-4
Molecular FormulaC21H19BrN4O2
Molecular Weight439.31 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Remimazolam Impurity 12 CAS 308243-65-4 chemical structure

Description

High-purity Remimazolam Impurity 12 (CAS 308243-65-4) pharmacopoeial impurity standards reference standard. Molecular formula: C21H19BrN4O2. Molecular weight: 439.31 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.

Physical & Chemical Properties

Molecular FormulaC21H19BrN4O2
Molecular Weight439.31 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
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)14.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentBr-containing
Nitrogen Atoms4

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