(S)-2-(tert-Butoxycarbonylamino)-4,4-difluorobutanoic acid CAS 467442-20-2
| CAS No. | 467442-20-2 |
| Molecular Formula | C9H15F2NO4 |
| Molecular Weight | 239.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(S)-2-(tert-Butoxycarbonylamino)-4,4-difluorobutanoic acid (CAS 467442-20-2), molecular formula C9H15F2NO4 and molecular weight 239.22 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (S)-2-(tert-Butoxycarbonylamino)-4,4-difluorobutanoic acid (C9H15F2NO4) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 239.22 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures (S)-2-(tert-Butoxycarbonylamino)-4,4-difluorobutanoic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H15F2NO4 |
| Molecular Weight | 239.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
- (R)-2-((tert-Butoxycarbonyl)amino)-3,3-difluorobutanoic acid (CAS 2205050-75-3)
- (S)-3-(((benzyloxy)carbonyl)amino)-2-hydroxypropanoic acid (CAS 42491-79-2)
- (5-Nitro-2-phenyl-1,3-dioxan-5-yl)methanol (CAS 51430-71-8)
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