(R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4,4-difluorobutanoic acid CAS 1262802-55-0

Purity 97%+In StockPharmaceutical Standards
CAS No.1262802-55-0
Molecular FormulaC19H17F2NO4
Molecular Weight361.34 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4,4-difluorobutanoic acid CAS 1262802-55-0 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 361.34 g/mol gives (R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4,4-difluorobutanoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4,4-difluorobutanoic acid (CAS 1262802-55-0) is a high-purity analytical reference standard with the molecular formula C19H17F2NO4 and a molecular weight of 361.34 g/mol.

(R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4,4-difluorobutanoic acid (C19H17F2NO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.

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 FormulaC19H17F2NO4
Molecular Weight361.34 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 methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)11.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1990
Halogen ContentF-containing
Nitrogen Atoms1

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