(R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-mercapto-3-methylbutanoic acid CAS 1403693-21-9
| CAS No. | 1403693-21-9 |
| Molecular Formula | C20H21NO4S |
| Molecular Weight | 371.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), (R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-mercapto-3-methylbutanoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies (R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-mercapto-3-methylbutanoic acid (CAS 1403693-21-9), a certified reference material (molecular formula C20H21NO4S, MW 371.45 g/mol) for analytical method development and quality control.
The molecular framework of (R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-mercapto-3-methylbutanoic acid (C20H21NO4S) is characterized by a flavonoid core, an amide group, a sulfone 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.
Physical & Chemical Properties
| Molecular Formula | C20H21NO4S |
| Molecular Weight | 371.45 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- 3-Phenyl-5-(3,4,5-trimethoxyphenyl)-4,5-dihydro-1H-pyrazole-1-carbothioamide (CAS 1370046-40-4)
- (((9H-fluoren-9-yl)methoxy)carbonyl)methionine (CAS 144701-23-5)
- (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-mercapto-3-methylbutanoic acid (CAS 132930-71-3)
- Boc-NH-PEG4-Ms (CAS 1447797-72-9)
- 5-Nitro-1,2-dihydropyrimidin-2-amine (CAS 84928-78-9)
- 2-(3,5-Dimethoxyphenyl)-2-oxoacetic acid (CAS 878561-39-8)
- 1-Methyl-2-phenoxy-1H-indole-3-carbaldehyde (CAS 338416-80-1)
- 4-Chloro-5-fluoro-2-methoxypyridine (CAS 1227580-15-5)
- Phenyl(4H-1,2,4-triazol-3-yl)methanamine dihydrochloride (CAS 1949815-98-8)
- 1-(2-Oxo-2-phenylethyl)pyridin-1-ium bromide (CAS 16883-69-5)
- (4-Cyanophenyl)zinc pivalate ( 0.96 mmol/g) (CAS 1344727-28-1)
- 3-[N-(3,5-dimethylphenyl)4-bromobenzenesulfonamido]propanoic acid (CAS 565168-54-9)
- Ethyl 2,6-dibromopyridine-4-carboxylate (CAS 90050-70-7)
- Tirzepatide Impurity 38 (CAS CATO-C4X-324038)
Why CATO?
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