4,5-Dihydro-5-methyl-3,4-diphenyl-5-isoxazolol-13C2, 15N CAS 1189468-68-5
| CAS No. | 1189468-68-5 |
| Molecular Formula | C14[13C]2H15[15N]O2 |
| Molecular Weight | 256.27 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4,5-Dihydro-5-methyl-3,4-diphenyl-5-isoxazolol-13C2, 15N 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.
4,5-Dihydro-5-methyl-3,4-diphenyl-5-isoxazolol-13C2, 15N (CAS 1189468-68-5) is a high-purity analytical reference standard with the molecular formula C14[13C]2H15[15N]O2 and a molecular weight of 256.27 g/mol.
Structurally, 4,5-Dihydro-5-methyl-3,4-diphenyl-5-isoxazolol-13C2, 15N (C14[13C]2H15[15N]O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 256.27 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C14[13C]2H15[15N]O2 |
| Molecular Weight | 256.27 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- 3-(2-Fluorophenyl)-1-(2-hydroxy-3-methoxypropyl)-1-methylurea (CAS 1210340-55-8)
- Phosphoric acid, diphenyl ester, silver(1+) salt (1:1) (CAS 22350-95-4)
- (2-Bromo-4-chlorophenyl)(methyl)sulfane (CAS 452082-73-4)
- N-(5-(Ethylthio)-1,3,4-thiadiazol-2-yl)propionamide (CAS 392239-38-2)
- Ethyl 3-amino-4-(3,5-dimethylpiperidin-1-yl)benzoate (CAS 1304304-97-9)
- N-(3-Aminophenyl)-2-(4-methylphenoxy)acetamide (CAS 1016512-71-2)
- (R)-1-Phenylethane-1-thiol (CAS 33877-16-6)
- 2-(5-Chloro-1H-1,2,4-triazol-1-yl)butanoic acid (CAS 1795480-08-8)
- 5-(3-Chloro-2,2-dimethylpropyl)-1-methyl-1h-1,2,4-triazole (CAS 1488764-24-4)
- 2-(4-Bromo-2-fluorophenyl)pyridine (CAS 777863-64-6)
- Palmitoyl Tripeptide-5 TFA (CAS 623172-55-4（free base）)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com