(S)-2-Amino-5-(((R)-1-((carboxymethyl)amino)-3-((4-nitrobenzyl)thio)-1-oxopropan-2-yl)amino)-5-oxopentanoic acid CAS 6803-19-6

Purity 97%+In StockPharmaceutical Standards
CAS No.6803-19-6
Molecular FormulaC21H36N4O11
Molecular Weight520.53 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(S)-2-Amino-5-(((R)-1-((carboxymethyl)amino)-3-((4-nitrobenzyl)thio)-1-oxopropan-2-yl)amino)-5-oxopentanoic acid CAS 6803-19-6 chemical structure

Description

Compared with other compounds in its class, the molecular weight of 520.53 g/mol gives (S)-2-Amino-5-(((R)-1-((carboxymethyl)amino)-3-((4-nitrobenzyl)thio)-1-oxopropan-2-yl)amino)-5-oxopentanoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.

(S)-2-Amino-5-(((R)-1-((carboxymethyl)amino)-3-((4-nitrobenzyl)thio)-1-oxopropan-2-yl)amino)-5-oxopentanoic acid (CAS 6803-19-6) is a high-purity analytical reference standard with the molecular formula C21H36N4O11 and a molecular weight of 520.53 g/mol.

The molecular framework of (S)-2-Amino-5-(((R)-1-((carboxymethyl)amino)-3-((4-nitrobenzyl)thio)-1-oxopropan-2-yl)amino)-5-oxopentanoic acid (C21H36N4O11) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. 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 FormulaC21H36N4O11
Molecular Weight520.53 g/mol
AppearanceOff-white to pale 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)6.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1958
Nitrogen Atoms4

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