5-(4-Nitrophenyl)oxazol-2-amine CAS 13576-56-2
| CAS No. | 13576-56-2 |
| Molecular Formula | C9H7N3O3 |
| Molecular Weight | 205.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C9H7N3O3, 5-(4-Nitrophenyl)oxazol-2-amine contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 205.17 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
5-(4-Nitrophenyl)oxazol-2-amine (CAS 13576-56-2), molecular formula C9H7N3O3 and molecular weight 205.17 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C9H7N3O3 |
| Molecular Weight | 205.17 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.) | 1960 |
| Nitrogen Atoms | 3 |
Related Nitrophenyl Standards
- 2-(2-Methyl-3-nitrophenyl)-1,3,4-oxadiazole (CAS 1092345-76-0)
- 2-(3-methyl-4-nitrophenyl)-1,3,4-oxadiazole (CAS 1118786-96-1)
- 5-(2-Methyl-5-nitrophenyl)-2H-tetrazole (CAS 1203801-06-2)
- 4-(2-Nitrophenyl)oxazol-2-amine (CAS 1248008-00-5)
- 5-[(4-nitrophenyl)methyl]-1H-1,2,3,4-tetrazole (CAS 131090-44-3)
- 3-Methyl-5-(4-nitrophenyl)-1,2,4-oxadiazole (CAS 1455-82-9)
- 5-(3-Nitrophenyl)isoxazol-3-amine (CAS 1463481-61-9)
- 5-(2-Nitrophenyl)isoxazol-3-amine (CAS 1491103-98-0)
Recommended Standards
- 3-(2H-1,3-benzodioxol-5-yl)-1,2-oxazol-5-ol (CAS 1354931-44-4)
- 2-Methyl-8-nitroquinazolin-4(3H)-one (CAS 1361455-58-4)
- 1-(6-Nitro-1H-indazol-1-yl)ethan-1-one (CAS 13436-57-2)
- 5-Methyl-3-(pyrimidin-5-yl)isoxazole-4-carboxylic acid (CAS 1370418-89-5)
- 2-Nitro-N-pyridin-2-ylbenzamide (CAS 96656-49-4)
- 2-Methyl-N-((tetrahydrofuran-2-yl)methyl)butan-1-amine (CAS 858796-41-5)
- 5-(3,4-Dimethoxyphenyl)-3-hydroxy-4-(5-methylfuran-2-carbonyl)-1-(pyridin-3-ylmethyl)-1H-pyrrol-2(5H)-one (CAS 439947-71-4)
- 2-(Pyridin-4-yl)-3-(m-tolyl)quinazoline-4(3H)-thione (CAS 61351-69-7)
- 2,6-Dimethyltetrahydro-2H-pyran-4-ol (CAS 41866-70-0)
- Methyl Indoline-4-carboxylate (CAS 155135-61-8)
- Methylnaltrexone Bromide Impurity 11 (CAS CATO-C4X-152111)
- 1-Boc-2-Benzyl-4-piperidinone (CAS 193480-28-3)
- 4-Acetamido-5-nitro-m-xylene (CAS 606-38-2)
- Fas C- Terminal Tripeptide (CAS 189109-90-8)
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