Methyl 4-chloro-3-hydroxy-5-methylthiophene-2-carboxylate CAS 113589-29-0

Purity 97%+In StockPharmaceutical Standards
CAS No.113589-29-0
Molecular FormulaC7H7ClO3S
Molecular Weight206.65 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Methyl 4-chloro-3-hydroxy-5-methylthiophene-2-carboxylate CAS 113589-29-0 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 206.65 g/mol gives Methyl 4-chloro-3-hydroxy-5-methylthiophene-2-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies Methyl 4-chloro-3-hydroxy-5-methylthiophene-2-carboxylate (CAS 113589-29-0), a certified reference material (molecular formula C7H7ClO3S, MW 206.65 g/mol) for analytical method development and quality control.

Structurally, Methyl 4-chloro-3-hydroxy-5-methylthiophene-2-carboxylate (C7H7ClO3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 206.65 g/mol, it falls into the medium-molecular-weight range. 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.

CATO manufactures Methyl 4-chloro-3-hydroxy-5-methylthiophene-2-carboxylate 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 FormulaC7H7ClO3S
Molecular Weight206.65 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1989
Halogen ContentCl-containing
Sulfur Atoms1

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