(4-Carboxy-3-ethoxy)phenyl Acetic Acid (Repaglinide Impurity) CAS 503834-19-3

Purity 97%+In StockPharmaceutical Standards
CAS No.503834-19-3
Molecular FormulaC12H14O5
Molecular Weight238.24 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(4-Carboxy-3-ethoxy)phenyl Acetic Acid (Repaglinide Impurity) CAS 503834-19-3 chemical structure

Description

CATO manufactures (4-Carboxy-3-ethoxy)phenyl Acetic Acid (Repaglinide Impurity) 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.

(4-Carboxy-3-ethoxy)phenyl Acetic Acid (Repaglinide Impurity) (CAS 503834-19-3), molecular formula C12H14O5 and molecular weight 238.24 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C12H14O5, (4-Carboxy-3-ethoxy)phenyl Acetic Acid (Repaglinide Impurity) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 238.24 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

Physical & Chemical Properties

Molecular FormulaC12H14O5
Molecular Weight238.24 g/mol
AppearanceOff-white to pale yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1984

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