N-tert-Butoxycarbonyl (bR,5S)-b-Amino-3-chloro-4,5-dihydro-5-isoxazoleethanol CAS 1151863-28-3
| CAS No. | 1151863-28-3 |
| Molecular Formula | C10H17ClN2O4 |
| Molecular Weight | 264.71 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 N-tert-Butoxycarbonyl (bR,5S)-b-Amino-3-chloro-4,5-dihydro-5-isoxazoleethanol.
N-tert-Butoxycarbonyl (bR,5S)-b-Amino-3-chloro-4,5-dihydro-5-isoxazoleethanol (CAS 1151863-28-3), molecular formula C10H17ClN2O4 and molecular weight 264.71 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, N-tert-Butoxycarbonyl (bR,5S)-b-Amino-3-chloro-4,5-dihydro-5-isoxazoleethanol (C10H17ClN2O4) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 264.71 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.
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 | C10H17ClN2O4 |
| Molecular Weight | 264.71 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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 | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
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