Ethyl 3-bromo-4,6-dimethyl-2-oxo-2h-pyran-5-carboxylate CAS 18152-79-9

Purity 97%+In StockPharmaceutical Standards
CAS No.18152-79-9
Molecular FormulaC10H11BrO4
Molecular Weight275.10 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Ethyl 3-bromo-4,6-dimethyl-2-oxo-2h-pyran-5-carboxylate CAS 18152-79-9 chemical structure

Description

The occurrence of Ethyl 3-bromo-4,6-dimethyl-2-oxo-2h-pyran-5-carboxylate is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Ethyl 3-bromo-4,6-dimethyl-2-oxo-2h-pyran-5-carboxylate (CAS 18152-79-9) is a high-purity analytical reference standard with the molecular formula C10H11BrO4 and a molecular weight of 275.10 g/mol.

The molecular framework of Ethyl 3-bromo-4,6-dimethyl-2-oxo-2h-pyran-5-carboxylate (C10H11BrO4) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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 Ethyl 3-bromo-4,6-dimethyl-2-oxo-2h-pyran-5-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 FormulaC10H11BrO4
Molecular Weight275.10 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor)
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
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; 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.)1962
Halogen ContentBr-containing

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