1-(4-Chlorophenyl)-3-(3-ethoxy-2,2,4-trimethyl-2,3-dihydro-1-benzofuran-7-yl)urea CAS 866153-45-9

Purity 97%+In StockPharmaceutical Standards
CAS No.866153-45-9
Molecular FormulaC20H23ClN2O3
Molecular Weight374.86 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-(4-Chlorophenyl)-3-(3-ethoxy-2,2,4-trimethyl-2,3-dihydro-1-benzofuran-7-yl)urea CAS 866153-45-9 chemical structure

Description

The occurrence of 1-(4-Chlorophenyl)-3-(3-ethoxy-2,2,4-trimethyl-2,3-dihydro-1-benzofuran-7-yl)urea is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

1-(4-Chlorophenyl)-3-(3-ethoxy-2,2,4-trimethyl-2,3-dihydro-1-benzofuran-7-yl)urea (CAS 866153-45-9), molecular formula C20H23ClN2O3 and molecular weight 374.86 g/mol, is a CATO reference standard with documented purity and traceability.

1-(4-Chlorophenyl)-3-(3-ethoxy-2,2,4-trimethyl-2,3-dihydro-1-benzofuran-7-yl)urea (C20H23ClN2O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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.

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

Physical & Chemical Properties

Molecular FormulaC20H23ClN2O3
Molecular Weight374.86 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)10.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Halogen ContentCl-containing
Nitrogen Atoms2

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