3-(2,4-Dichlorophenyl)-3,4-dihydro-1-oxo-1H-2-benzopyran-4-carboxylic acid CAS 400751-70-4
| CAS No. | 400751-70-4 |
| Molecular Formula | C16H10Cl2O4 |
| Molecular Weight | 337.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-(2,4-Dichlorophenyl)-3,4-dihydro-1-oxo-1H-2-benzopyran-4-carboxylic acid is closely related to a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-(2,4-Dichlorophenyl)-3,4-dihydro-1-oxo-1H-2-benzopyran-4-carboxylic acid (CAS 400751-70-4), molecular formula C16H10Cl2O4 and molecular weight 337.15 g/mol, is a CATO reference standard with documented purity and traceability.
3-(2,4-Dichlorophenyl)-3,4-dihydro-1-oxo-1H-2-benzopyran-4-carboxylic acid (C16H10Cl2O4) contains a flavonoid core, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 3-(2,4-Dichlorophenyl)-3,4-dihydro-1-oxo-1H-2-benzopyran-4-carboxylic 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 | C16H10Cl2O4 |
| Molecular Weight | 337.15 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 sealed and dry |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
Related Dichlorophenyl Standards
- 5-{4-[(2,4-dichlorophenyl)methoxy]phenyl}-2,3-dihydro-1,3,4-oxadiazol-2-one (CAS 866152-87-6)
- (3-(2,4-Dichlorophenyl)-1-(2-fluorophenyl)-1H-pyrazol-4-yl)methanol (CAS 618444-51-2)
- (2E)-1-(2,5-Dichlorophenyl)-3-(2,3-dimethoxyphenyl)prop-2-en-1-one (CAS 1004008-99-4)
- (2E)-3-(2,4-Dichlorophenyl)-1-(2,4-dimethoxyphenyl)prop-2-en-1-one (CAS 171365-99-4)
- (2E)-1-(2,5-Dichlorophenyl)-3-(2,4-dimethoxyphenyl)prop-2-en-1-one (CAS 183798-63-2)
- (2E)-1-(3,4-Dichlorophenyl)-3-(2,4-dimethoxyphenyl)prop-2-en-1-one (CAS 183798-71-2)
- (2E)-1-(2,4-Dichlorophenyl)-3-(2,4-dimethoxyphenyl)prop-2-en-1-one (CAS 874346-52-8)
- (2E)-1-(2,4-Dichlorophenyl)-3-(3,4-dimethoxyphenyl)prop-2-en-1-one (CAS 925703-41-9)
Recommended Standards
- 2-Bromo-5-[(carbamoylmethyl)sulfamoyl]benzoic acid (CAS 848290-15-3)
- tert-Butyl (3-iodo-4-oxocyclohex-2-en-1-yl)carbamate (CAS 205877-96-9)
- 1-(5-Methyl-4-nitro-3-(perfluoropropyl)-1H-pyrazol-1-yl)ethan-1-one (CAS 244033-12-3)
- 2-Amino-1-(2-iodophenyl)-4,5-dimethyl-1H-pyrrole-3-carbonitrile (CAS 1094279-35-2)
- 3-Bromo-6-(2-methoxyphenyl)pyridine (CAS 1194683-55-0)
- 1-Bromo-2-(3-bromopropoxy)benzene (CAS 37136-84-8)
- 2-(2,4-Dichlorophenyl)-2-oxoethyl 2-phenylquinoline-4-carboxylate (CAS 355434-00-3)
- Vonoprazan Impurity 173 (CAS CATO-C4X-1020173)
- 2-Acetamido-3-ethoxy-3-oxopropanoic acid (CAS 54681-67-3)
- 1-((4-Methoxypyridin-3-yl)sulfonyl)piperazine (CAS 1352525-55-3)
- 1-Allyl-7-chloro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 105946-14-3)
- Betamethasone Impurity 145 (CAS CATO-C4X-1437145)
- 5-Methyl-2-(phenethyloxy)aniline (CAS 806603-62-3)
- Tirzepatide Impurity 48 (CAS CATO-C4X-324048)
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