3-(2,3-Dichloro-4-methoxyphenyl)benzo[d]isoxazole CAS 87828-90-8
| CAS No. | 87828-90-8 |
| Molecular Formula | C14H9Cl2NO2 |
| Molecular Weight | 294.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-(2,3-Dichloro-4-methoxyphenyl)benzo[d]isoxazole (CAS 87828-90-8), molecular formula C14H9Cl2NO2 and molecular weight 294.13 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-(2,3-Dichloro-4-methoxyphenyl)benzo[d]isoxazole (C14H9Cl2NO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 294.13 g/mol, it falls into the medium-molecular-weight range. 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 | C14H9Cl2NO2 |
| Molecular Weight | 294.13 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichloro Standards
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Recommended Standards
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- 4-Ethoxycarbonyl-3-fluorophenylboronic acid pinacol ester (CAS 474709-72-3)
- 1-Benzyl-2-iodobenzene (CAS 35444-93-0)
- N-Ethyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amine (CAS 2170895-05-1)
- tert-Butyl ((1S,3R)-3-(aminomethyl)cyclopentyl)carbamate (CAS 774213-03-5)
- Methyl 2-fluoro-6-methoxyisonicotinate (CAS 1256788-56-3)
- Methyl 2-amino-5-propylthiophene-3-carboxylate (CAS 343855-83-4)
- 2-Methyl-4-oxo-4-(3'-methoxyphenyl)butyric acid (CAS 914348-14-4)
- 3-Bromo-4-(thiazolidin-3-yl)benzonitrile (CAS 1774896-33-1)
- Ethyl 4-bromo-4-phenylbutanoate (CAS 56454-15-0)
- 2,2,3,3,4,4,5,5,5-Nonafluoro-1-(1H-imidazol-1-yl)pentan-1-one (CAS 883546-05-2)
- 5,8-Dimethylquinoline-2-carboxylic acid (CAS 1092305-10-6)
- Peptide Impurity 05 (CAS 2322924-83-2)
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