Methyl 7-nitro-5-oxo-3,5-dihydro-2H-oxazolo[2,3-b]quinazoline-8-carboxylate CAS 1039454-99-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1039454-99-3 |
| Molecular Formula | C12H9N3O6 |
| Molecular Weight | 291.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 7-nitro-5-oxo-3,5-dihydro-2H-oxazolo[2,3-b]quinazoline-8-carboxylate (CAS 1039454-99-3) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C12H9N3O6. Molecular weight: 291.22 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C12H9N3O6 |
| Molecular Weight | 291.22 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 3 |
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Recommended Standards
- 21854-95-5 Benzil, 2,2'-dichloro- (8CI) 1,2-Ethanedione, 1,2-bis(2-chlorophenyl)- Ethanedione, bis(2-chlorophenyl)- 2,2'-Dichlorobenzil NSC 114829 (CAS 21854-95-5)
- 3-(4-Methoxyphenyl)-3-(2,2,2-trifluoroacetamido)propanoic acid (CAS 117291-24-4)
- Rac-Selenobiotin (CAS 57956-29-3)
- 1-(1-((Benzyloxy)carbonyl)azetidin-3-yl)-1h-1,2,3-triazole-4-carboxylic acid (CAS 1506134-31-1)
- Ethyl 6-methyl-2-oxo-1,2,5,6,7,8-hexahydroquinoline-3-carboxylate (CAS 1797228-87-5)
- (2'-Nitro-[1,1'-biphenyl]-4-yl)methanol (CAS 159815-76-6)
- 9-Methylcarbazole (CAS 1484-12-4)
- 1-[(3aR,8aR)-Tetrahydro-2,2-dimethyl-4,4,8,8-tetraphenyl-1,3-dioxolo[4,5-e][1,3,2]dioxaphosphepin-6-yl]piperidine (CAS 213843-95-9)
- 3-{4-chloro-5h,6h,7h-cyclopenta[d]pyrimidin-2-yl}pyridine (CAS 1240528-01-1)
- Semaglutide impurity 251 (CAS CATO-C4X-2226251)
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