1-(5-tert-Butyl-1,2-oxazol-3-yl)-3-methylurea CAS 55807-46-0
| CAS No. | 55807-46-0 |
| Molecular Formula | C11H8F2O2 |
| Molecular Weight | 210.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-(5-tert-Butyl-1,2-oxazol-3-yl)-3-methylurea (CAS 55807-46-0), molecular formula C11H8F2O2 and molecular weight 210.18 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C11H8F2O2, 1-(5-tert-Butyl-1,2-oxazol-3-yl)-3-methylurea contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 210.18 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).
As a certified reference material (CRM), 1-(5-tert-Butyl-1,2-oxazol-3-yl)-3-methylurea 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 | C11H8F2O2 |
| Molecular Weight | 210.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | F-containing |
Recommended Standards
- 1-(3,4-Difluorophenyl)-3-(prop-2-yn-1-yl)urea (CAS 69921-71-7)
- 1-(Difluoromethyl)-3,3-dimethoxycyclobutanecarboxylic acid (CAS 2719726-03-9)
- (Z)-N’-hydroxy-2-(trifluoromethyl)thiophene-3-carboximidamide (CAS 2060523-52-4)
- 1,3-dimethyl 2-(furan-2-ylmethylidene)propanedioate (CAS 74299-84-6)
- n-((4-Bromothiophen-2-yl)methyl)-3-methylcyclopentan-1-amine (CAS 1342967-21-8)
- 8-Ethyl-4-methyl-6-phenyl-2H-pyrano[3,2-g]quinolin-2-one (CAS 647841-84-7)
- (2-(6-(Dimethylamino)-4-methylpyridin-3-yl)pyrrolidin-1-yl)(phenyl)methanone (CAS 1352523-55-7)
- 2-((4-Ethyl-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(3-methoxyphenyl)acetamide (CAS 575467-06-0)
- 3,9-Dodecadiyne (CAS 61827-89-2)
- MEGA-9 (CAS 85261-19-4)
- 5-(Azepan-1-yl)-2-(ethylsulfonyl)aniline (CAS 1220033-67-9)
- (R)-1-(1H-Benzo[d]imidazol-1-yl)propan-2-amine (CAS 534620-19-4)
- Tert-butyl 3,5-diamino-1H-pyrazole-4-carboxylate (CAS 2271119-56-1)
- Gastric Inhibitory Polypeptide (3-42) (human) trifluoroacetate salt (CAS 1802086-25-4)
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