2,7-Diphenyl-5H-pyrazolo[5,1-b][1,3]oxazin-5-one CAS 919533-33-8
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 919533-33-8 |
| Molecular Formula | C18H12N2O2 |
| Molecular Weight | 288.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,7-Diphenyl-5H-pyrazolo[5,1-b][1,3]oxazin-5-one (CAS 919533-33-8) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C18H12N2O2. Molecular weight: 288.30 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C18H12N2O2 |
| Molecular Weight | 288.30 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 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
Related Diphenyl Standards
- 1,6-Diphenyl-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one (CAS 130925-67-6)
- 3,4-Diphenyl-2H-pyrazolo[3,4-d]pyridazin-7(6H)-one (CAS 181259-34-7)
- 2-(1,3-Diphenyl-1H-pyrazol-4-yl)-1,3,4-oxadiazole (CAS 917947-69-4)
- 2,5-Diphenyl-7H-pyrazolo[5,1-b][1,3]oxazin-7-one (CAS 919533-30-5)
- 2,8-Diphenyl-1H-purin-6(7H)-one (CAS 54013-62-6)
- 3,5-Diphenyl-1H-pyrazolo[3,4-d]pyridazin-4(5H)-one (CAS 90330-87-3)
- 3,6-Diphenyl-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione (CAS 54660-00-3)
- 3,7-Diphenyl-1H-pyrazolo[3,4-d]pyridazin-4(5H)-one (CAS 62538-45-8)
Recommended Standards
- 2,7-Naphthalenedisulfonic acid (CAS 92-41-1)
- 2,3,7,8-Tetramethoxydibenzo[b,d]furan (CAS 76303-42-9)
- 2-(Naphthalen-1-yl)benzofuran-3-carboxylic acid (CAS 63559-04-6)
- Methyl 2-(4-methyl-1H-imidazol-1-yl)acetate (CAS 339526-03-3)
- 2-((4-(4-Bromophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-1-(2,5-dimethoxyphenyl)ethanone (CAS 477329-10-5)
- Octahydropyrano[3,4-b]thiomorpholine (CAS 1342738-83-3)
- Mianserin impurity 21 (CAS CATO-C4X-136921)
- 3-(oxan-2-yl)piperidine hydrochloride (CAS 1955493-52-3)
- (2-Fluoro-5-(isopropoxymethyl)phenyl)boronic acid (CAS 1334681-94-5)
- Neuropeptide W-23 (human) (CAS 383415-79-0)
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 13829788188 / jacky.chen@cato-chem.com