3-(4-Methoxy-3-nitrophenyl)isoxazol-5-amine CAS 501902-55-2
| CAS No. | 501902-55-2 |
| Molecular Formula | C10H9N3O4 |
| Molecular Weight | 235.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(4-Methoxy-3-nitrophenyl)isoxazol-5-amine (CAS 501902-55-2), molecular formula C10H9N3O4 and molecular weight 235.20 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H9N3O4, 3-(4-Methoxy-3-nitrophenyl)isoxazol-5-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 235.20 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C10H9N3O4 |
| Molecular Weight | 235.20 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.) | 1984 |
| Nitrogen Atoms | 3 |
Related Methoxy Standards
- 2-Methoxy-6-([(2,2,2-trifluoroethyl)amino]methyl)phenol (CAS 1016756-54-9)
- (4-Methoxy-3-(2,2,2-trifluoroethoxy)phenyl)methanamine (CAS 1037135-08-2)
- 2-Methoxy-1-[4-(trifluoromethoxy)phenyl]ethylamine (CAS 1042807-67-9)
- (S)-2-methoxy-1-(4-(trifluoromethoxy)phenyl)ethan-1-amine (CAS 1269929-44-3)
- (R)-2-methoxy-1-(2-(trifluoromethoxy)phenyl)ethan-1-amine (CAS 1269936-63-1)
- (S)-2-methoxy-1-(2-(trifluoromethoxy)phenyl)ethan-1-amine (CAS 1270028-28-8)
- (S)-2-methoxy-1-(3-(trifluoromethoxy)phenyl)ethan-1-amine (CAS 1270095-23-2)
- (R)-2-methoxy-1-(4-(trifluoromethoxy)phenyl)ethan-1-amine (CAS 1270276-20-4)
Recommended Standards
- 3-(2-Methoxyethoxy)-5-(trifluoromethyl)aniline (CAS 880882-07-5)
- 3-(6-Nitro-1H-benzo[d]imidazol-2-yl)propanoic acid (CAS 33299-25-1)
- 2-Cyano-N-(2-methoxy-4-nitrophenyl)acetamide (CAS 546099-81-4)
- 3-(Trifluoromethyl)-9H-carbazole (CAS 2467-83-6)
- 5-Bromosalicylaldehyde (CAS 1761-61-1)
- 1-Ethyl-3-(1H-indol-3-yl)-1-phenylurea (CAS 941987-58-2)
- 3-oxabicyclo[3.1.1]heptane-2,4-dione (CAS 4462-97-9)
- tert-Butyl ((1-((S)-2-amino-3-methylbutanoyl)piperidin-2-yl)methyl)(isopropyl)carbamate (CAS 1354026-22-4)
- 7-Chloro-5-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine-3-carbonitrile (CAS 1131604-90-4)
- 3-(4-Chlorophenyl)-2-methyl-[1,2,4]triazolo[5,1-b]quinazolin-9(3H)-one (CAS 95353-74-5)
- Methyl 6-(4-acetylpiperazin-1-yl)-4-methylnicotinate (CAS 1355180-21-0)
- D-myo-Inositol-1,2-diphosphate, sodium salt (CAS 208584-51-4)
- 3-(3-Amino-4-iodo-5-methyl-1H-pyrazol-1-yl)propanamide (CAS 1354706-18-5)
- Compstatin control peptide (CAS 301544-78-5)
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