7-Chloro-2-methyl-1,3-diphenyl-2,3-dihydro-1H-imidazo[4,5-b]quinoxalin-4-ium 4-methylbenzenesulfonate CAS 25983-11-3

Purity 97%+In StockPharmaceutical Standards
CAS No.25983-11-3
Molecular FormulaC22H17ClN4
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

7-Chloro-2-methyl-1,3-diphenyl-2,3-dihydro-1H-imidazo[4,5-b]quinoxalin-4-ium 4-methylbenzenesulfonate CAS 25983-11-3 chemical structure

Description

The occurrence of 7-Chloro-2-methyl-1,3-diphenyl-2,3-dihydro-1H-imidazo[4,5-b]quinoxalin-4-ium 4-methylbenzenesulfonate is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

7-Chloro-2-methyl-1,3-diphenyl-2,3-dihydro-1H-imidazo[4,5-b]quinoxalin-4-ium 4-methylbenzenesulfonate (CAS 25983-11-3), molecular formula C22H17ClN4C7H7O3S and molecular weight 544.05 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 7-Chloro-2-methyl-1,3-diphenyl-2,3-dihydro-1H-imidazo[4,5-b]quinoxalin-4-ium 4-methylbenzenesulfonate (C22H17ClN4C7H7O3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 19.5, corresponding to approximately 19 ring(s) or double-bond equivalent(s). With a molecular weight of 544.05 g/mol, it falls into the moderately-high-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), 7-Chloro-2-methyl-1,3-diphenyl-2,3-dihydro-1H-imidazo[4,5-b]quinoxalin-4-ium 4-methylbenzenesulfonate 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 FormulaC22H17ClN4 C7H7O3S
Molecular Weight544.05 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Soluble in DMSO, DMF, methanol
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)19.5
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1964
Halogen ContentCl-containing
Nitrogen Atoms4
Sulfur Atoms1

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