1-(4,5-Diphenyloxazol-2-yl)-3-ethylurea CAS 35629-54-0
| CAS No. | 35629-54-0 |
| Molecular Formula | C18H17N3O2 |
| Molecular Weight | 307.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 307.35 g/mol gives 1-(4,5-Diphenyloxazol-2-yl)-3-ethylurea distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 1-(4,5-Diphenyloxazol-2-yl)-3-ethylurea (CAS 35629-54-0), a certified reference material (molecular formula C18H17N3O2, MW 307.35 g/mol) for analytical method development and quality control.
1-(4,5-Diphenyloxazol-2-yl)-3-ethylurea (C18H17N3O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), 1-(4,5-Diphenyloxazol-2-yl)-3-ethylurea 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 | C18H17N3O2 |
| Molecular Weight | 307.35 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 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Nitrogen Atoms | 3 |
Related Diphenyloxazol Standards
- 2-(2-(4,5-Diphenyloxazol-2-yl)hydrazono)acetic acid (CAS 85044-92-4)
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- 1-(2,5-Diphenyloxazol-4-yl)pyrimidine-2,4(1H,3H)-dione (CAS 304865-12-1)
- 2-((4,5-Diphenyloxazol-2-yl)methyl)cyclohexanone (CAS 89004-10-4)
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Recommended Standards
- 1-(1H-Benzo[d][1,2,3]triazol-1-yl)propyl cinnamate (CAS 304690-71-9)
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- (R)-6-(7-Hydroxy-6,7-dihydro-5H-pyrrolo[1,2-c]imidazol-7-yl)-N-methyl-2-naphthamide (CAS 752243-39-3)
- 13-(4-Ethoxyphenyl)-1,8,10,12-tetraazatricyclo[7.4.0.0^{2,7}]trideca-2,4,6,8,11-pentaen-11-amine (CAS 454177-86-7)
- 2-{[(4-chlorophenyl)methyl]amino}acetic acid hydrochloride (CAS 90562-54-2)
- Celastrol (CAS 34157-83-0)
- (Tyr5,D-Trp6·8·9,Lys-NH210)-Neurokinin A (4-10) (CAS 135306-85-3)
- 5-(4-Fluorophenyl)-1-phenyl-3-(trifluoromethyl)-1H-pyrazole (CAS 515845-17-7)
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- N-(2-((3-(dimethylamino)propyl)carbamoyl)phenyl)furan-2-carboxamide (CAS 947031-82-5)
- 2,3-Dimethyl-4-oxo-4,5-dihydrofuro[3,2-c]pyridine-7-carbonitrile (CAS 1956336-00-7)
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- Semaglutide impurity 29 (CAS 1188328-22-4)
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