Indometacin EP Impurity A CAS 74-11-3

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.74-11-3
Molecular FormulaC7H5ClO2
Molecular Weight156.57 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Indometacin EP Impurity A CAS 74-11-3 chemical structure

Description

CATO supplies Indometacin EP Impurity A (CAS 74-11-3), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C7H5ClO2. Molecular weight: 156.57 g/mol. Batch-specific COA and technical support are available on request.

Physical & Chemical Properties

Molecular FormulaC7H5ClO2
Molecular Weight156.57 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor)
Purity>95%
StorageStore at 2-8°C, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)5.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Halogen ContentCl-containing

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