3,4-Dichloro-1-(2-ethoxyphenyl)-1H-pyrrole-2,5-dione CAS 138509-79-2

Purity 97%+In StockPharmaceutical Standards
CAS No.138509-79-2
Molecular FormulaC12H9Cl2NO3
Molecular Weight286.11 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

3,4-Dichloro-1-(2-ethoxyphenyl)-1H-pyrrole-2,5-dione CAS 138509-79-2 chemical structure

Description

Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 3,4-Dichloro-1-(2-ethoxyphenyl)-1H-pyrrole-2,5-dione is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 286.11 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).

3,4-Dichloro-1-(2-ethoxyphenyl)-1H-pyrrole-2,5-dione (CAS 138509-79-2), molecular formula C12H9Cl2NO3 and molecular weight 286.11 g/mol, is a CATO reference standard with documented purity and traceability.

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 3,4-Dichloro-1-(2-ethoxyphenyl)-1H-pyrrole-2,5-dione 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 FormulaC12H9Cl2NO3
Molecular Weight286.11 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1996
Halogen ContentCl-containing
Nitrogen Atoms1

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