Boc-Cys(Et)-OH CAS 16947-82-3
| CAS No. | 16947-82-3 |
| Molecular Formula | C10H19NO4S |
| Molecular Weight | 249.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Boc-Cys(Et)-OH is closely related to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Boc-Cys(Et)-OH (CAS 16947-82-3), molecular formula C10H19NO4S and molecular weight 249.33 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Boc-Cys(Et)-OH (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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | >95% |
| 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.) | 1961 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- Rasagiline impurity 61 (CAS CATO-C4X-191361)
- Boc-DL-Met-OH (CAS 93000-03-4)
- Cinacalcet Impurity 65 (CAS 1860814-97-6)
- Boc-D-Met-OH (CAS 5241-66-7)
- 1-(cis-Hexahydropyrrolo[3,4-b]pyrrol-5(1H)-yl)-4-methylpentan-1-one (CAS 1218026-66-4)
- 2-(1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidin-3-yl)thiazole-5-carboxylic acid (CAS 2137672-29-6)
- 3-Hydroxy-3-(pyridin-2-yl)propanoic acid (CAS 1251581-29-9)
- 2-Chloro-1,8-bis(m-tolyloxy)anthracene-9,10-dione (CAS 61601-44-3)
- tert-butyl N-[(2R,3S)-2-methylazetidin-3-yl]carbamate;hydrochloride (CAS 2173637-08-4)
- N-(4-hydroxyphenyl)-N,4-dimethylbenzamide (CAS 1148-53-4)
- 4,7,7-Trimethyl-3-(4-methylbenzylidene)bicyclo[2.2.1]heptan-2-one (CAS 883805-47-8)
- 4,5-Dibromo-N-(3-(2-methylpiperidin-1-yl)propyl)-1H-pyrrole-2-carboxamide (CAS 860648-82-4)
- Methyl 4-(2,6-dichlorobenzoyl)-1H-pyrrole-2-carboxylate (CAS 338753-18-7)
- Tirzepatide Impurity 59 (CAS CATO-C4X-324059)
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