5-(3-Nitrophenyl)oxazole CAS 89808-77-5
| CAS No. | 89808-77-5 |
| Molecular Formula | C9H6N2O3 |
| Molecular Weight | 190.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 190.16 g/mol gives 5-(3-Nitrophenyl)oxazole distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-(3-Nitrophenyl)oxazole (CAS 89808-77-5) is a high-purity analytical reference standard with the molecular formula C9H6N2O3 and a molecular weight of 190.16 g/mol.
Structurally, 5-(3-Nitrophenyl)oxazole (C9H6N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 190.16 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), 5-(3-Nitrophenyl)oxazole 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 | C9H6N2O3 |
| Molecular Weight | 190.16 g/mol |
| Appearance | Pale yellow to 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 methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 2 |
Related Nitrophenyl Standards
- 5-(4-Nitrophenyl)oxazole (CAS 1014-23-9)
- 4-(2-Nitrophenyl)oxazole (CAS 1126636-34-7)
- 1-(4-Nitrophenyl)-1,2,3-triazole (CAS 1204-91-7)
- 5-(3-Nitrophenyl)-1,2-oxazole (CAS 126633-02-1)
- 4-(4-Nitrophenyl)oxazole (CAS 13382-61-1)
- 4-(4-Nitrophenyl)-4H-1,2,4-triazole (CAS 16759-47-0)
- 4-(4-Nitrophenyl)isoxazole (CAS 17819-23-7)
- 2-(4-Nitrophenyl)-2H-1,2,3-triazole (CAS 18922-72-0)
Recommended Standards
- 5-(3-Nitrophenyl)-1H-1,2,4-triazole (CAS 6219-53-0)
- 5-(3-Pyridyl)isoxazole-3-carboxylic Acid (CAS 893638-39-6)
- 5-(2-Pyridyl)isoxazole-3-carboxylic Acid (CAS 893638-37-4)
- 5-(4-Nitrophenyl)-1,2-oxazole (CAS 3383-42-4)
- 2-Ethynylnicotinaldehyde (CAS 1211522-97-2)
- 2-{3,5-dioxo-10-oxa-4-azatricyclo[5.2.1.0,2,6]decan-4-yl}acetic acid (CAS 1212310-79-6)
- 5-Methoxyquinolin-3-amine (CAS 881668-93-5)
- 5-[(4-Benzyloxy)benzyl]-2,4-diaminopyrimidine (CAS 49873-11-2)
- 5-chloro-1H-Benzimidazole-1-ethanamine hydrochloride (1:2) (CAS 1374408-30-6)
- (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-amino-2-methyl-4-oxobutanoic acid (CAS 1403590-49-7)
- 5-(4-Bromophenyl)-5-oxovaleronitrile (CAS 898766-86-4)
- 3-(1H-pyrazol-1-yl)-1,2,3,4-tetrahydroquinoline (CAS 1251322-20-9)
- (2R,3R)-3-(3-Methoxyphenyl)-N,N,2-trimethyl-1-pentanamine (CAS 809282-13-1)
- Insulin Degludec Impurity 12 (CAS CATO-C4X-215712)
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