3-(Isoxazol-3-yl)-1,1-dimethylurea CAS 55807-89-1
| CAS No. | 55807-89-1 |
| Molecular Formula | C6H9N3O2 |
| Molecular Weight | 155.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C6H9N3O2, 3-(Isoxazol-3-yl)-1,1-dimethylurea contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 155.15 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
3-(Isoxazol-3-yl)-1,1-dimethylurea (CAS 55807-89-1) is a high-purity analytical reference standard with the molecular formula C6H9N3O2 and a molecular weight of 155.15 g/mol.
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 | C6H9N3O2 |
| Molecular Weight | 155.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Nitrogen Atoms | 3 |
Related Isoxazol Standards
- Methyl 3-(isoxazol-4-yl)propanoate (CAS 141501-28-2)
- 4-(Isoxazol-4-yl)butanoic acid (CAS 141679-49-4)
- 4-(Isoxazol-3-yl)butanoic acid (CAS 170648-43-8)
- Ethyl 2-(isoxazol-3-yl)acetate (CAS 82669-57-6)
- Ethyl 2-(isoxazol-5-yl)acetate (CAS 82669-58-7)
- Methyl 3-(isoxazol-5-yl)propanoate (CAS 915776-16-8)
- 4-(Isoxazol-4-yl)butanamide (CAS 141679-51-8)
- 2-(Isoxazol-5-yl)-N,N-dimethylacetamide (CAS 930773-35-6)
Recommended Standards
- 3-(Formylmethyl)glutarimide (CAS 2066-88-8)
- 3,4-Dimethoxypyridine 1-oxide (CAS 769-71-1)
- 3-(5-Methylisoxazol-3-yl)propanoic acid (CAS 80073-32-1)
- 3,4-Dimethyl-5-oxo-2,5-dihydro-1H-pyrazole-1-carboxamide (CAS 857220-41-8)
- Methyl 2,6-bis(trifluoromethyl)nicotinate (CAS 137144-34-4)
- 4-[(4-Bromo-2-methylphenoxy)methyl]piperidine (CAS 946714-05-2)
- 2-Amino-N-((2,3-dihydrobenzo[b][1,4]dioxin-6-yl)methyl)-N-methylacetamide hydrochloride (CAS 1580432-67-2)
- 5-Heptyl-2-(4'-pentyl-[1,1'-biphenyl]-4-yl)pyrimidine (CAS 92528-52-4)
- Fosaprepitant Impurity 11 (CAS CATO-C4X-116811)
- 5-Bromo-1-[tris(propan-2-yl)silyl]-1H-indole (CAS 128564-66-9)
- 3-((Dimethylamino)methyl)-4-ethoxybenzaldehyde (CAS 883549-69-7)
- (4-(P-tolyloxy)phenyl)methanol (CAS 181231-61-8)
- (5-Methylpiperazin-2-yl)methanamine (CAS 136665-35-5)
- Casein Kinase II Receptor Peptide (CAS 198481-81-1)
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