1,3-Dioxoisoindolin-2-yl 3-(2,6-dichlorophenyl)-5-methylisoxazole-4-carboxylate CAS 660821-03-4
| CAS No. | 660821-03-4 |
| Molecular Formula | C19H10Cl2N2O5 |
| Molecular Weight | 417.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 417.20 g/mol gives 1,3-Dioxoisoindolin-2-yl 3-(2,6-dichlorophenyl)-5-methylisoxazole-4-carboxylate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1,3-Dioxoisoindolin-2-yl 3-(2,6-dichlorophenyl)-5-methylisoxazole-4-carboxylate (CAS 660821-03-4), molecular formula C19H10Cl2N2O5 and molecular weight 417.20 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C19H10Cl2N2O5, 1,3-Dioxoisoindolin-2-yl 3-(2,6-dichlorophenyl)-5-methylisoxazole-4-carboxylate contains a flavonoid core, 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 417.20 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.
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.
Physical & Chemical Properties
| Molecular Formula | C19H10Cl2N2O5 |
| Molecular Weight | 417.20 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dioxoisoindolin Standards
- 2-(1,3-Dioxoisoindolin-2-yl)-N-(4-nitrophenyl)-3-phenylpropanamide (CAS 1212146-39-8)
- Ethyl 1-((1,3-dioxoisoindolin-2-yl)methyl)-6,7-dimethoxyisoquinoline-4-carboxylate (CAS 264188-67-2)
- 1,3-Dioxoisoindolin-2-yl 3-(1,3-dioxoisoindolin-2-yl)benzoate (CAS 111148-57-3)
- N-(4-(2-(1,3-dioxoisoindolin-2-yl)ethyl)thiazol-2-yl)-4-nitrobenzamide (CAS 866050-86-4)
- 4-((1,3-Dioxoisoindolin-2-yl)methyl)-N-(4-methoxyphenyl)benzenesulfonamide (CAS 955298-15-4)
- 2-((1,3-Dioxoisoindolin-2-yl)oxy)-N-(5-iodopyridin-2-yl)acetamide (CAS 339018-00-7)
- Ethyl 2-((5-((2-(1,3-dioxoisoindolin-2-yl)ethyl)thio)-1,3,4-thiadiazol-2-yl)thio)acetate (CAS 477856-15-8)
- Ethyl4-((1,3-dioxoisoindolin-2-yl)methyl)-2-(phenylamino)thiazole-5-carboxylate (CAS 951624-33-2)
Recommended Standards
- ((2R,3S,5R)-5-(4-Amino-5-(hydroxymethyl)-2-oxopyrimidin-1(2H)-yl)-3-hydroxytetrahydrofuran-2-yl)methyl trihydrogen diphosphate (CAS 94714-46-2)
- 3-(Bromomethyl)-9,10-dioxo-9,10-dihydroanthracene-1,8-diyl diacetate (CAS 65615-59-0)
- CAS 3209-10-7 (CAS 3209-10-7)
- 4-(5-(3,5-Dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-2-methylbenzamide (CAS 864730-52-9)
- 8-Allyl-3-(4-cinnamylpiperazine-1-carbonyl)-2H-chromen-2-one (CAS 325779-71-3)
- Ethyl Methyl Sulfate (CAS 814-40-4)
- Metazachlor-d6 (CAS 1246816-51-2)
- 2,4-Dichloro-5-fluorobenzamide (CAS 135748-33-3)
- 3-(Pyridin-4-yl)-5-(trifluoromethyl)pyridine-2-thiol (CAS 1214327-01-1)
- 3,4-Diethoxy-N-methoxy-N-methylbenzamide (CAS 1221342-52-4)
- 2-((4-Bromophenyl)thio)-N-(4-(4-chlorophenyl)thiazol-2-yl)acetamide (CAS 338966-02-2)
- 5-(2-(1H-Imidazol-1-yl)phenyl)-1H-1,2,4-triazole (CAS 338793-57-0)
- 2-Bromo-1,4-bis(bromomethyl)benzene (CAS 19900-52-8)
- Tau Peptide (74-102) (Exon 3/Insert 2 Domain) trifluoroacetate salt (CAS 1322695-34-0)
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