8-Chloro-4-oxo-4H-chromene-3-carbaldehyde CAS 64481-09-0
| CAS No. | 64481-09-0 |
| Molecular Formula | C10H5ClO3 |
| Molecular Weight | 208.60 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.
8-Chloro-4-oxo-4H-chromene-3-carbaldehyde (CAS 64481-09-0) is a high-purity analytical reference standard with the molecular formula C10H5ClO3 and a molecular weight of 208.60 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 8-Chloro-4-oxo-4H-chromene-3-carbaldehyde is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 208.60 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 8-Chloro-4-oxo-4H-chromene-3-carbaldehyde 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 | C10H5ClO3 |
| Molecular Weight | 208.60 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, ethanol, DMSO |
| 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.) | 1975 |
| Halogen Content | Cl-containing |
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Recommended Standards
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- D-cis-(+)-Cobalt(3+), diaqua[2,2'-(ethylenedithio)bis[ethylamine]]-, ion (CAS 23883-99-0)
- 3-Bromo-2-chloro-6-fluorobenzoic acid (CAS 1114809-13-0)
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- N,N'-(Ethane-1,2-diyl)bis(1-(pyridin-2-yl)methanimine) (CAS 2847-14-5)
- 2-((2,2-Dimethyl-2,3-dihydrobenzofuran-7-yl)oxy)-5-(trifluoromethyl)pyridine (CAS 1024450-09-6)
- 6-(Phosphonomethyl)pyridine-2-carboxylic acid (CAS 142646-16-0)
- 3-(5-Phenyl-1,3,4-oxadiazol-2-yl)aniline (CAS 107559-05-7)
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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