(S)-2-((tert-Butoxycarbonyl)amino)-3-mercapto-3-methylbutanoic acid CAS 119222-62-7
| CAS No. | 119222-62-7 |
| Molecular Formula | C10H19NO4S |
| Molecular Weight | 249.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
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-((tert-Butoxycarbonyl)amino)-3-mercapto-3-methylbutanoic acid.
(S)-2-((tert-Butoxycarbonyl)amino)-3-mercapto-3-methylbutanoic acid (CAS 119222-62-7), molecular formula C10H19NO4S and molecular weight 249.33 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of (S)-2-((tert-Butoxycarbonyl)amino)-3-mercapto-3-methylbutanoic acid (C10H19NO4S) is characterized by an amide group, a sulfone group, a carboxylic acid 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 Formula | C10H19NO4S |
| Molecular Weight | 249.33 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- N-{[3-(thiophen-3-yl)-1,2,4-oxadiazol-5-yl]methyl}cyclopentanamine (CAS 1184152-35-9)
- ((1R,9aR)-octahydro-2H-quinolizin-1-yl)methyl hydrogen sulfate (CAS 1195292-70-6)
- Ethyl (tert-butoxycarbonyl)-L-cysteinate (CAS 118143-52-5)
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- Methyl (2Z)-2-(4-tert-butylbenzenesulfonyl)-3-[(4-chlorophenyl)amino]prop-2-enoate (CAS 1327185-27-2)
- (2-(Thiophen-2-yl)oxazol-4-yl)methanamine hydrochloride (CAS 1049731-26-1)
- Semaglutide Impurity 131 (CAS 2618647-80-4)
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