(S)-2-((R)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-oxopyrrolidin-1-yl)-4-methylpentanoic acid CAS 145484-45-3

Purity 97%+In StockPharmaceutical Standards
CAS No.145484-45-3
Molecular FormulaC25H28N2O5
Molecular Weight436.50 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(S)-2-((R)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-oxopyrrolidin-1-yl)-4-methylpentanoic acid CAS 145484-45-3 chemical structure

Description

Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (S)-2-((R)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-oxopyrrolidin-1-yl)-4-methylpentanoic acid.

(S)-2-((R)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-oxopyrrolidin-1-yl)-4-methylpentanoic acid (CAS 145484-45-3) is a high-purity analytical reference standard with the molecular formula C25H28N2O5 and a molecular weight of 436.50 g/mol.

Based on its molecular formula C25H28N2O5, (S)-2-((R)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-oxopyrrolidin-1-yl)-4-methylpentanoic acid contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 436.50 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 FormulaC25H28N2O5
Molecular Weight436.50 g/mol
AppearancePale yellow to yellow crystalline powder
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
Degree of Unsaturation (DBE)13.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1998
Nitrogen Atoms2

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