2-(6-Chloro-7-hydroxy-4-methyl-2-oxo-2H-chromen-3-yl)acetic acid CAS 855287-83-1
| CAS No. | 855287-83-1 |
| Molecular Formula | C12H9ClO5 |
| Molecular Weight | 268.65 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 2-(6-Chloro-7-hydroxy-4-methyl-2-oxo-2H-chromen-3-yl)acetic acid.
2-(6-Chloro-7-hydroxy-4-methyl-2-oxo-2H-chromen-3-yl)acetic acid (CAS 855287-83-1) is a high-purity analytical reference standard with the molecular formula C12H9ClO5 and a molecular weight of 268.65 g/mol.
2-(6-Chloro-7-hydroxy-4-methyl-2-oxo-2H-chromen-3-yl)acetic acid (C12H9ClO5) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures 2-(6-Chloro-7-hydroxy-4-methyl-2-oxo-2H-chromen-3-yl)acetic 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 | C12H9ClO5 |
| Molecular Weight | 268.65 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1987 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 1-(4-Chloro-3-nitrobenzyl)pyrrolidine-2,5-dione (CAS 1097788-45-8)
- 3-Chloro-6,7-dimethoxyquinoxaline-2-carboxylic acid (CAS 122234-54-2)
- 6-Chloro-7-ethoxy-2-oxo-2H-chromene-3-carboxylic acid (CAS 1352503-73-1)
- Ethyl 7-chloro-5-nitro-1H-indole-2-carboxylate (CAS 1352899-64-9)
- 2-((3-Chloro-4-methyl-2-oxo-2H-chromen-7-yl)oxy)acetic acid (CAS 176446-74-5)
- 5-Chloro-6-methoxy-4-methyl-8-nitroquinolin-2(1H)-one (CAS 189746-23-4)
- 5-Chloro-4-(fluorosulfonyl)-2-methoxybenzoic acid (CAS 1955558-41-4)
- 2-[(6-chloro-4-methyl-2-oxo-2h-chromen-7-yl)oxy]acetic acid (CAS 326102-48-1)
Recommended Standards
- (E)-4-(2-(3-chlorobenzoyl)hydrazinyl)-4-oxobut-2-enoic acid (CAS 304456-83-5)
- 2-chloro-5-(2,4-dioxohexahydropyrimidin-1-yl)benzoic acid (CAS 2703770-98-1)
- 2-Chloro-N-(2,4-difluorophenyl)nicotinamide (CAS 83164-90-3)
- 4-chloro-3-(2,4-dioxohexahydropyrimidin-1-yl)benzoic acid (CAS 2377645-90-2)
- 4-Methoxy-2-oxo-1,2-dihydro-pyridine-3-carboxylic acid ethyl ester (CAS 87853-69-8)
- 2-(4-(Difluoromethyl)-6-hydroxy-2-methylpyridin-3-yl)acetonitrile (CAS 1806862-45-2)
- 3-(4-(Trifluoromethoxy)phenyl)prop-2-yn-1-ol (CAS 893642-04-1)
- But-1-yn-1-ylbenzene (CAS 83585-27-7)
- 3-{[(3-fluorophenyl)methyl]amino}propanoic acid hydrochloride (CAS 1797671-89-6)
- n-((1h-Imidazol-2-yl)methyl)-2-methylbutan-2-amine (CAS 1247926-90-4)
- 2-Bromo-1-(2,4-dimethyl-1-tosyl-1H-pyrrol-3-yl)ethan-1-one (CAS 885518-13-8)
- 3-Chloro-6-(4-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl]methyl}phenoxy)pyridazine (CAS 338750-35-9)
- Bicyclo[4.1.0]heptane-1-carboxylic acid (CAS 96259-65-3)
- Semaglutide Impurity 145 (CAS CATO-C4X-2226145)
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