5-(2,4-Dichlorophenyl)isoxazole-3-carboxylic Acid CAS 712348-40-8
| CAS No. | 712348-40-8 |
| Molecular Formula | C10H5Cl2NO3 |
| Molecular Weight | 258.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-(2,4-Dichlorophenyl)isoxazole-3-carboxylic Acid.
5-(2,4-Dichlorophenyl)isoxazole-3-carboxylic Acid (CAS 712348-40-8), molecular formula C10H5Cl2NO3 and molecular weight 258.06 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C10H5Cl2NO3, 5-(2,4-Dichlorophenyl)isoxazole-3-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 258.06 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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-(2,4-Dichlorophenyl)isoxazole-3-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 | C10H5Cl2NO3 |
| Molecular Weight | 258.06 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichlorophenyl Standards
- 1-(2,5-Dichlorophenyl)-1h-1,2,3-triazole-5-carboxylic acid (CAS 101860-73-5)
- 1-(2,4-Dichlorophenyl)-1H-1,2,4-triazole-3-carboxylic acid (CAS 103058-71-5)
- 1-(3,4-Dichlorophenyl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1094673-43-4)
- 1-(2,3-Dichlorophenyl)-1h-1,2,3-triazole-5-carboxylic acid (CAS 1153904-73-4)
- 1-(3,4-Dichlorophenyl)-1h-1,2,3-triazole-5-carboxylic acid (CAS 1153905-03-3)
- 5-(2,6-Dichlorophenyl)-1,3-oxazole-4-carboxylic acid (CAS 1248310-70-4)
- 5-(2,5-Dichlorophenyl)-1,3-oxazole-4-carboxylic acid (CAS 1249213-48-6)
- 2-(3,4-Dichlorophenyl)oxazole-4-carboxylic acid (CAS 1249920-40-8)
Recommended Standards
- 5-(2,3-Dichlorophenyl)oxazole-4-carboxylic acid (CAS 951885-34-0)
- 5-(2,4-Dichlorophenyl)oxazole-4-carboxylic Acid (CAS 255876-52-9)
- 4-Iodo-6-methyl-1H-indazole (CAS 885522-25-8)
- 5-(2,5-Dichlorophenyl)isoxazole-3-carboxylic Acid (CAS 953724-37-3)
- 2-Amino-5-isobutoxybenzamide (CAS 1251365-36-2)
- N-(Naphthalen-1-yl)benzamide (CAS 634-42-4)
- 8-Iodo-[1,2,4]triazolo[4,3-b]pyridazine (CAS 1569870-19-4)
- 5-Methyl-6-(phenylamino)nicotinaldehyde (CAS 1355193-89-3)
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- N-methyl-3-(p-tolyloxy)propan-1-amine (CAS 915923-08-9)
- (2E)-1-(3-Chlorophenyl)-3-(3-nitrophenyl)prop-2-en-1-one (CAS 263240-78-4)
- 2-Amino-N,N-dimethylbenzamide (CAS 6526-66-5)
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