2-Chloro-5-(3,5-dimethyl-isoxazol-4-yl)-benzoic acid CAS 876709-11-4
| CAS No. | 876709-11-4 |
| Molecular Formula | C12H10ClNO3 |
| Molecular Weight | 251.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 2-Chloro-5-(3,5-dimethyl-isoxazol-4-yl)-benzoic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 251.67 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
2-Chloro-5-(3,5-dimethyl-isoxazol-4-yl)-benzoic acid (CAS 876709-11-4), molecular formula C12H10ClNO3 and molecular weight 251.67 g/mol, is a CATO reference standard with documented purity and traceability.
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.
CATO manufactures 2-Chloro-5-(3,5-dimethyl-isoxazol-4-yl)-benzoic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
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.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
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- 1,2:3,4-Diepoxybutane (CAS 1464-53-5)
- Resmetirom impurity 68 (CAS CATO-C4X-291268)
- 5-Bromo-2-chloro-N-(4,5-dimethylthiazol-2-yl)benzamide (CAS 701260-27-7)
- 2-(tert-Butyl)benzofuran (CAS 4265-11-6)
- rel-2-((1R,2R)-2-(tert-Butyl)cyclopropyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 749885-70-9)
- 3-Iodo-5-isopropoxy-1H-pyrazolo[3,4-c]pyridine (CAS 1661834-77-0)
- Semaglutide Impurity 142 (CAS CATO-C4X-2226142)
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