2-(4-Chlorobenzoyl)-2H,4H-chromeno[4,3-c]pyrazole CAS 866051-35-6

Purity 97%+In StockPharmaceutical Standards
CAS No.866051-35-6
Molecular FormulaC17H11ClN2O2
Molecular Weight310.73 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-(4-Chlorobenzoyl)-2H,4H-chromeno[4,3-c]pyrazole CAS 866051-35-6 chemical structure

Description

As a certified reference material (CRM), 2-(4-Chlorobenzoyl)-2H,4H-chromeno[4,3-c]pyrazole 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.

2-(4-Chlorobenzoyl)-2H,4H-chromeno[4,3-c]pyrazole (CAS 866051-35-6) is a high-purity analytical reference standard with the molecular formula C17H11ClN2O2 and a molecular weight of 310.73 g/mol.

Structurally, 2-(4-Chlorobenzoyl)-2H,4H-chromeno[4,3-c]pyrazole (C17H11ClN2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 310.73 g/mol, it falls into the moderately-high-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

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.

Physical & Chemical Properties

Molecular FormulaC17H11ClN2O2
Molecular Weight310.73 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
Purity97%+
StorageStore at 2-8°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)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Halogen ContentCl-containing
Nitrogen Atoms2

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