920289-29-8 WO23I2827Q AGG-523 UNII-WO23I2827Q Pentanoic acid, 4-(((1,1'-biphenyl)-4-ylcarbonyl)amino)-5-((2-(4-fluorophenyl)-1,1-dimethylethyl)amino)-5-oxo-, (4S)- PF-05212371 4-(S)-(((Biphenyl-4-yl)carbonyl)amino)-4-((2-(4-fluorophenyl)-1,1-dimethylethyl)carbamoyl)butyric acid PF-5212371 WAY-266523 CAS 920289-29-8

Purity 97%+In StockPharmaceutical Standards
CAS No.920289-29-8
Molecular FormulaC28H29FN2O4
Molecular Weight476.54 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

920289-29-8 WO23I2827Q AGG-523 UNII-WO23I2827Q Pentanoic acid, 4-(((1,1'-biphenyl)-4-ylcarbonyl)amino)-5-((2-(4-fluorophenyl)-1,1-dimethylethyl)amino)-5-oxo-, (4S)- PF-05212371 4-(S)-(((Biphenyl-4-yl)carbonyl)amino)-4-((2-(4-fluorophenyl)-1,1-dimethylethyl)carbamoyl)butyric acid PF-5212371 WAY-266523 CAS 920289-29-8 chemical structure

Description

920289-29-8 WO23I2827Q AGG-523 UNII-WO23I2827Q Pentanoic acid, 4-(((1,1'-biphenyl)-4-ylcarbonyl)amino)-5-((2-(4-fluorophenyl)-1,1-dimethylethyl)amino)-5-oxo-, (4S)- PF-05212371 4-(S)-(((Biphenyl-4-yl)carbonyl)amino)-4-((2-(4-fluorophenyl)-1,1-dimethylethyl)carbamoyl)butyric acid PF-5212371 WAY-266523 (CAS 920289-29-8) is a high-purity analytical reference standard with the molecular formula C28H29FN2O4 and a molecular weight of 476.54 g/mol.

Based on its molecular formula C28H29FN2O4, 920289-29-8 WO23I2827Q AGG-523 UNII-WO23I2827Q Pentanoic acid, 4-(((1,1'-biphenyl)-4-ylcarbonyl)amino)-5-((2-(4-fluorophenyl)-1,1-dimethylethyl)amino)-5-oxo-, (4S)- PF-05212371 4-(S)-(((Biphenyl-4-yl)carbonyl)amino)-4-((2-(4-fluorophenyl)-1,1-dimethylethyl)carbamoyl)butyric acid PF-5212371 WAY-266523 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 476.54 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

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 FormulaC28H29FN2O4
Molecular Weight476.54 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor)
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)15.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1987
Halogen ContentF-containing
Nitrogen Atoms2

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