(S)-3-((tert-Butoxycarbonyl)amino)-2-methylpropanoic acid CAS 190897-47-3

Purity 97%+In StockPharmaceutical Standards
CAS No.190897-47-3
Molecular FormulaC9H17NO4
Molecular Weight203.24 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

(S)-3-((tert-Butoxycarbonyl)amino)-2-methylpropanoic acid CAS 190897-47-3 chemical structure

Description

(S)-3-((tert-Butoxycarbonyl)amino)-2-methylpropanoic acid (CAS 190897-47-3), molecular formula C9H17NO4 and molecular weight 203.24 g/mol, is a CATO reference standard with documented purity and traceability.

(S)-3-((tert-Butoxycarbonyl)amino)-2-methylpropanoic acid (C9H17NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 FormulaC9H17NO4
Molecular Weight203.24 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)2.0
CAS Registry Year (est.)2011
Nitrogen Atoms1

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