5-(4-Chloro-2-nitrophenyl)isoxazol-3-amine CAS 1496833-71-6
| CAS No. | 1496833-71-6 |
| Molecular Formula | C9H6ClN3O3 |
| Molecular Weight | 239.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-(4-Chloro-2-nitrophenyl)isoxazol-3-amine 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.
CATO supplies 5-(4-Chloro-2-nitrophenyl)isoxazol-3-amine (CAS 1496833-71-6), a certified reference material (molecular formula C9H6ClN3O3, MW 239.62 g/mol) for analytical method development and quality control.
5-(4-Chloro-2-nitrophenyl)isoxazol-3-amine (C9H6ClN3O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
Physical & Chemical Properties
| Molecular Formula | C9H6ClN3O3 |
| Molecular Weight | 239.62 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chloro Standards
- 1-(6-Chloro-4-nitro-1H-indazol-1-yl)ethanone (CAS 1010102-85-8)
- 1-(3-Chloro-4-methoxyphenyl)-2,2,2-trifluoroethan-1-amine (CAS 1039923-43-7)
- 5-(2-Chloro-5-nitrophenyl)-3-methyl-1,2,4-oxadiazole (CAS 1119395-85-5)
- (S)-1-(3-chloro-4-methoxyphenyl)-2,2,2-trifluoroethan-1-amine (CAS 1212828-23-3)
- (R)-1-(3-chloro-4-methoxyphenyl)-2,2,2-trifluoroethan-1-amine (CAS 1213932-14-9)
- (R)-1-(5-Chloro-2-methoxyphenyl)-2,2,2-trifluoroethan-1-amine (CAS 1213956-30-9)
- (S)-1-(3-chloro-5-methoxyphenyl)-2,2,2-trifluoroethan-1-amine (CAS 1272740-44-9)
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Recommended Standards
- 5-(2-Chloro-6-nitrophenyl)isoxazol-3-amine (CAS 1482031-36-6)
- 3-Chloro-2-propoxy-5-(trifluoromethyl)pyridine (CAS 1881288-42-1)
- 2-(6-Chloropyridazin-3-yl)-5-methyl-2H-1,2,3-triazole-4-carboxylic acid (CAS 1431729-35-9)
- 1-(3-Chloro-5-nitro-1H-indazol-1-yl)ethan-1-one (CAS 68159-07-9)
- [(2-methylthieno[2,3-e][1,3]benzothiazol-5-yl)oxy]acetic acid (CAS 926211-05-4)
- (S)-4-(tert-Butyl)-2-(pyrazin-2-yl)-4,5-dihydrooxazole (CAS 1814890-52-2)
- 5-chloro-2-ethoxy-3-fluoropyridine (CAS 886373-94-0)
- 2-Chloropyridine-4-sulfonyl chloride (CAS 1000933-25-4)
- 5-(Difluoromethyl)-2-methylpyridin-3-amine (CAS 1805959-84-5)
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