Ascorbic Acid EP Impurity H CAS 122046-79-1

Purity >95%In StockPharmacopoeial Impurity Standards
CAS No.122046-79-1
Molecular FormulaC7H8O7
Molecular Weight204.13 g/mol
CategoryPharmacopoeial Impurity Standards / EP Impurities
AvailabilityIn Stock

Chemical Structure

Ascorbic Acid EP Impurity H CAS 122046-79-1 chemical structure

Description

CATO supplies Ascorbic Acid EP Impurity H (CAS 122046-79-1), a pharmacopoeial impurity reference standard (molecular formula C7H8O7, MW 204.13 g/mol) used for the identification and quantification of trace impurities in APIs.

Owing to a carbohydrate-derived structure, Ascorbic Acid EP Impurity H is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 204.13 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.

CATO manufactures Ascorbic Acid EP Impurity H under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.

Physical & Chemical Properties

Molecular FormulaC7H8O7
Molecular Weight204.13 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity>95%
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1991

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