tert-Butyl 5-methyl-3-phenylisoxazole-4-carboxylate CAS 211429-79-7
| CAS No. | 211429-79-7 |
| Molecular Formula | C15H17NO3 |
| Molecular Weight | 259.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, tert-Butyl 5-methyl-3-phenylisoxazole-4-carboxylate (C15H17NO3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 259.30 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
tert-Butyl 5-methyl-3-phenylisoxazole-4-carboxylate (CAS 211429-79-7), molecular formula C15H17NO3 and molecular weight 259.30 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), tert-Butyl 5-methyl-3-phenylisoxazole-4-carboxylate 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.
Physical & Chemical Properties
| Molecular Formula | C15H17NO3 |
| Molecular Weight | 259.30 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2017 |
| Nitrogen Atoms | 1 |
Recommended Standards
- tert-Butyl 5-acetyl-1H-indole-1-carboxylate (CAS 848357-27-7)
- tert-Butyl 6-cyano-3,4-dihydro-1,5-naphthyridine-1(2H)-carboxylate (CAS 2314394-09-5)
- tert-Butyl 4-(4-aminophenyl)-1H-pyrazole-1-carboxylate (CAS 209959-26-2)
- tert-Butyl 7-cyano-3,4-dihydro-2,6-naphthyridine-2(1H)-carboxylate (CAS 2750527-52-5)
- (S)-2-(1-(((Benzyloxy)carbonyl)amino)ethyl)thiazole-5-carboxylic acid (CAS 1956437-28-7)
- 1-(4-Fluorophenyl)-3-phenylprop-2-yn-1-one (CAS 82677-84-7)
- 1-(2-Chlorothiazol-5-yl)ethan-1-amine hydrochloride (CAS 2742660-55-3)
- 3',6'-Bis(ethylamino)-2',7'-dimethyl-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one (CAS 41382-37-0)
- 5-Fluoro-6-methoxy-2,3-dihydro-1H-inden-1-one (CAS 83802-71-5)
- N1-(1-benzylpiperidin-4-yl)-N1-methylethane-1,2-diamine (CAS 1274519-73-1)
- (S)-2-amino-2-(3-bromo-5-fluorophenyl)ethan-1-ol (CAS 1213947-40-0)
- 5-Bromo-2-(isoxazol-5-yl)phenol (CAS 876149-58-5)
- 216959-34-1 Ethyl N-(tert-butoxycarbonyl)oxamate ethyl 2-(tert-butoxycarbonylamino)-2-oxoacetate ethyl n-boc-oxamidate n-boc ethyl oxamate tert-butoxycarbonylamino-oxo-acetic acid ethyl ester (CAS 216959-34-1)
- D-Ser39-Tirzepatide (CAS CATO-CPTD788679)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com