1-(4-Methylphenyl)-1H-pyrrole-2,5-dione CAS 1631-28-3

Purity 97%+In StockPharmaceutical Standards
CAS No.1631-28-3
Molecular FormulaC11H9NO2
Molecular Weight187.19 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-(4-Methylphenyl)-1H-pyrrole-2,5-dione CAS 1631-28-3 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 187.19 g/mol gives 1-(4-Methylphenyl)-1H-pyrrole-2,5-dione distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

CATO supplies 1-(4-Methylphenyl)-1H-pyrrole-2,5-dione (CAS 1631-28-3), a certified reference material (molecular formula C11H9NO2, MW 187.19 g/mol) for analytical method development and quality control.

Structurally, 1-(4-Methylphenyl)-1H-pyrrole-2,5-dione (C11H9NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 187.19 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.

As a certified reference material (CRM), 1-(4-Methylphenyl)-1H-pyrrole-2,5-dione meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC11H9NO2
Molecular Weight187.19 g/mol
AppearancePale yellow to yellow crystalline powder
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in chloroform, dichloromethane, ethyl acetate, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)8.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Nitrogen Atoms1

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