5-(4-(Chloromethyl)phenyl)-3-methylisoxazole-4-carboxylic acid CAS 1243415-10-2
| CAS No. | 1243415-10-2 |
| Molecular Formula | C12H10ClNO3 |
| Molecular Weight | 251.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-(4-(Chloromethyl)phenyl)-3-methylisoxazole-4-carboxylic acid (CAS 1243415-10-2), molecular formula C12H10ClNO3 and molecular weight 251.67 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H10ClNO3, 5-(4-(Chloromethyl)phenyl)-3-methylisoxazole-4-carboxylic acid contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 251.67 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).
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-(4-(Chloromethyl)phenyl)-3-methylisoxazole-4-carboxylic acid 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 | C12H10ClNO3 |
| Molecular Weight | 251.67 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-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 chloroform, dichloromethane, ethyl acetate, 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.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloromethyl Standards
- 4-(5-(Chloromethyl)-1,2,4-oxadiazol-3-yl)-N-methylbenzamide (CAS 1119452-69-5)
- (4E)-3-(Chloromethyl)-4-(4-methoxybenzylidene)-isoxazol-5(4H)-one (CAS 1142199-12-9)
- (4E)-3-(Chloromethyl)-4-(2-methoxybenzylidene)-isoxazol-5(4H)-one 1142199-13-0 9228AC C12H10ClNO3 (CAS 1142199-13-0)
- (4E)-3-(Chloromethyl)-4-(3-methoxybenzylidene)-isoxazol-5(4H)-one (CAS 1142199-16-3)
- 2-[2-(chloromethyl)-4-oxo-3,4-dihydroquinazolin-3-yl]acetamide (CAS 848369-71-1)
- 3-(chloromethyl)-5-(2,3-dihydro-1,4-benZodioxin-6-yl)-1,2-oxazole (CAS 941235-02-5)
- Methyl 3-(4-(chloromethyl)phenyl)isoxazole-4-carboxylate (CAS 839718-03-5)
- methyl 4-[4-(chloromethyl)-1,3-oxazol-2-yl]benzoate (CAS 942404-59-3)
Recommended Standards
- Methyl 2-(7-chloro-4-oxoquinolin-1(4H)-yl)acetate (CAS 1235261-26-3)
- Ethyl 1-(3-chlorophenyl)-1H-1,2,4-triazole-3-carboxylate (CAS 1245643-37-1)
- Methyl 5-amino-1-(4-chlorophenyl)-1H-pyrazole-4-carboxylate (CAS 121716-21-0)
- Methyl 5-amino-1-(2-chlorophenyl)-1H-pyrazole-4-carboxylate (CAS 1264044-28-1)
- 4,5,6,7-Tetrahydroisoxazolo[4,5-c]pyridin-3(2H)-one (CAS 53602-00-9)
- 3,5-Dibromo-4-fluorocinnamic acid (CAS 1807312-50-0)
- (3-Fluoro-2-methoxyphenyl)boronic acid (CAS 762287-59-2)
- tert-Butyl (1-((benzyloxy)amino)-4-(methylthio)-1-oxobutan-2-yl)carbamate (CAS 1219419-42-7)
- tert-Butyl ((S)-1-amino-1-oxo-3-((S)-2-oxopyrrolidin-3-yl)propan-2-yl)carbamate (CAS 2713439-69-9)
- 3-(4-Trifluoromethylphenyl)phenol (CAS 365426-93-3)
- Abacavir Impurity 14 (CAS CATO-C4X-152714)
- Methyl 2-Benzylhydrazinecarboxylate (CAS 69353-11-3)
- 4-Morpholino-6-phenyl-2-(3-pyridinyl)-5-pyrimidinecarbonitrile (CAS 320417-69-4)
- Neuropeptide S (rat) (CAS 412938-75-1)
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