2-((R)-2-((R)-2-Amino-3-mercaptopropanamido)-3-(1H-indol-3-yl)propanamido)-2-methylpropanoic acid CAS 821776-26-5

Purity 97%+In StockPharmaceutical Standards
CAS No.821776-26-5
Molecular FormulaC18H24N4O4S
Molecular Weight392.47 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

2-((R)-2-((R)-2-Amino-3-mercaptopropanamido)-3-(1H-indol-3-yl)propanamido)-2-methylpropanoic acid CAS 821776-26-5 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 2-((R)-2-((R)-2-Amino-3-mercaptopropanamido)-3-(1H-indol-3-yl)propanamido)-2-methylpropanoic acid.

2-((R)-2-((R)-2-Amino-3-mercaptopropanamido)-3-(1H-indol-3-yl)propanamido)-2-methylpropanoic acid (CAS 821776-26-5), molecular formula C18H24N4O4S and molecular weight 392.47 g/mol, is a CATO reference standard with documented purity and traceability.

Structurally, 2-((R)-2-((R)-2-Amino-3-mercaptopropanamido)-3-(1H-indol-3-yl)propanamido)-2-methylpropanoic acid (C18H24N4O4S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 392.47 g/mol, it falls into the moderately-high-molecular-weight range. 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 FormulaC18H24N4O4S
Molecular Weight392.47 g/mol
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
Degree of Unsaturation (DBE)9.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1986
Nitrogen Atoms4
Sulfur Atoms1

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