5,5-Difluoro-1,3,7,9-tetramethyl-10-(4-nitrophenyl)-5H-4lambda4,5lambda4-dipyrrolo[1,2-c:2',1'-f][1,3,2]diazaborinine CAS 321895-92-5

Purity 97%+In StockPharmaceutical Standards
CAS No.321895-92-5
Molecular FormulaC19H18BF2N3O2
Molecular Weight369.17 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5,5-Difluoro-1,3,7,9-tetramethyl-10-(4-nitrophenyl)-5H-4lambda4,5lambda4-dipyrrolo[1,2-c:2',1'-f][1,3,2]diazaborinine CAS 321895-92-5 chemical structure

Description

5,5-Difluoro-1,3,7,9-tetramethyl-10-(4-nitrophenyl)-5H-4lambda4,5lambda4-dipyrrolo[1,2-c:2',1'-f][1,3,2]diazaborinine (CAS 321895-92-5) is a high-purity analytical reference standard with the molecular formula C19H18BF2N3O2 and a molecular weight of 369.17 g/mol.

The molecular framework of 5,5-Difluoro-1,3,7,9-tetramethyl-10-(4-nitrophenyl)-5H-4lambda4,5lambda4-dipyrrolo[1,2-c:2',1'-f][1,3,2]diazaborinine (C19H18BF2N3O2) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 FormulaC19H18BF2N3O2
Molecular Weight369.17 g/mol
AppearancePale yellow to yellow crystalline powder. (slight halide-like odor, low volatility)
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)11.5
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)2025
Halogen ContentF-containing
Nitrogen Atoms3

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