5-(2,4-Dichlorophenyl)-2-methyl-3-(4-oxo-4H-chromen-3-yl)tetrahydro-4H-pyrrolo[3,4-d]isoxazole-4,6(5H)-dione CAS 318949-33-6
| CAS No. | 318949-33-6 |
| Molecular Formula | C21H14Cl2N2O5 |
| Molecular Weight | 445.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-(2,4-Dichlorophenyl)-2-methyl-3-(4-oxo-4H-chromen-3-yl)tetrahydro-4H-pyrrolo[3,4-d]isoxazole-4,6(5H)-dione (CAS 318949-33-6), a certified reference material (molecular formula C21H14Cl2N2O5, MW 445.25 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 5-(2,4-Dichlorophenyl)-2-methyl-3-(4-oxo-4H-chromen-3-yl)tetrahydro-4H-pyrrolo[3,4-d]isoxazole-4,6(5H)-dione is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 445.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-(2,4-Dichlorophenyl)-2-methyl-3-(4-oxo-4H-chromen-3-yl)tetrahydro-4H-pyrrolo[3,4-d]isoxazole-4,6(5H)-dione 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 | C21H14Cl2N2O5 |
| Molecular Weight | 445.25 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.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichlorophenyl Standards
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Recommended Standards
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- Chlorophenol Red (sodium) (CAS 123333-64-2)
- 5-Bromo-N-(2-(2-(4-(trifluoromethyl)phenyl)thiazol-4-yl)ethyl)furan-2-carboxamide (CAS 896679-30-4)
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- [2,4'-Bipyridine]-5-carbaldehyde (CAS 834881-87-7)
- Zinc sulfite dihydrate (CAS 7488-52-0)
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- 2,4-Difluoro-3-chlorobenzoic Acid (CAS 154257-75-7)
- 2-(Hydroxyiminomethyl)-1-methylpyridinium Methane Sulfonate (CAS 154-97-2)
- 2-Chloro-6-(trifluoromethoxy)phenylboronic acid (CAS 2036084-49-6)
- methyl 4-nitro-1H-indole-6-carboxylate (CAS 1000343-62-3)
- Peptide Impurity 64 (CAS CATO-CPTD788964)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com