Methyl (6-chloro-7-hydroxy-4-methyl-2-oxo-2H-chromen-3-yl)acetate CAS 500203-85-0
| CAS No. | 500203-85-0 |
| Molecular Formula | C13H11ClO5 |
| Molecular Weight | 282.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Methyl (6-chloro-7-hydroxy-4-methyl-2-oxo-2H-chromen-3-yl)acetate (CAS 500203-85-0), molecular formula C13H11ClO5 and molecular weight 282.68 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, Methyl (6-chloro-7-hydroxy-4-methyl-2-oxo-2H-chromen-3-yl)acetate is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 282.68 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures Methyl (6-chloro-7-hydroxy-4-methyl-2-oxo-2H-chromen-3-yl)acetate 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 | C13H11ClO5 |
| Molecular Weight | 282.68 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.) | 1984 |
| Halogen Content | Cl-containing |
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- 6-Chloro-7-isopropoxy-2-oxo-2H-chromene-3-carboxylic acid (CAS 1352512-64-1)
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Recommended Standards
- Ethyl 3-[(2-chlorophenoxy)methyl]-1,2,4-oxadiazole-5-carboxylate (CAS 261962-50-9)
- Tizanidine impurity 24 (CAS CATO-C4X-144524)
- Ethyl (6-chloro-7-hydroxy-2-oxo-2H-chromen-4-yl)-acetate (CAS 92023-40-0)
- 3-Chloro-N-(3-ethoxypropyl)-5-(trifluoromethyl)-2-pyridinamine (CAS 1040309-94-1)
- 3,3-Dimethyl-1,4-oxazepane (CAS 933734-83-9)
- 7-Methoxy-3,4-dihydroisoquinolin-1(2H)-one, 97% (CAS 22246-04-4)
- 3-Chloro-4-fluoro-2-methoxybenzoic acid (CAS 1782833-93-5)
- 3-(1,1-Difluoroethyl)cyclobutan-1-ol (CAS 2358391-50-9)
- 1-(2,6-Difluorobenzyl)piperazine (CAS 874774-61-5)
- Lactic acid acrylate (CAS 98136-13-1)
- 7-Methoxy-3-methylimidazo[1,2-b]isoquinoline-5,10-dione (CAS 62366-61-4)
- N1,N5-Ditritylpentane-1,5-diamine (CAS 170459-64-0)
- 1-(diethoxymethoxy)-4-methylbenzene (CAS 25604-53-9)
- [Formaldehyde Schiff-base]-Semaglutide Impurity 136 X TFA Salt (CAS CATO-C4X-2226136)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com