6-Chlorochromone CAS 33533-99-2
| CAS No. | 33533-99-2 |
| Molecular Formula | C9H5ClO2 |
| Molecular Weight | 180.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
6-Chlorochromone (CAS 33533-99-2) is a high-purity analytical reference standard with the molecular formula C9H5ClO2 and a molecular weight of 180.59 g/mol.
Based on its molecular formula C9H5ClO2, 6-Chlorochromone contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 180.59 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
As a certified reference material (CRM), 6-Chlorochromone meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H5ClO2 |
| Molecular Weight | 180.59 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Halogen Content | Cl-containing |
Related Chlorochromone Standards
Recommended Standards
- 6-chloro-5-nitropyrimidin-4-amine (CAS 4316-94-3)
- 6-Chloroimidazo[1,2-a]pyridine-2-carbaldehyde (CAS 881841-30-1)
- 6-Chloro-2H-chromen-2-one (CAS 2051-59-4)
- 6-Chlorophthalazin-1(2H)-one (CAS 57835-96-8)
- 6-methoxy-2,7-naphthyridine-4-carbaldehyde (CAS 2920716-11-4)
- 5-Chloro-1,3-dimethyl-1H-pyrazole-4-carboxamide (CAS 204251-18-3)
- 4-Chloro-1-naphthyl 4-piperidinylmethyl etherhydrochloride (CAS 1220034-45-6)
- 3,5,6-Trichloropyridin-2-ol (CAS 93111-34-3)
- (2E)-3-(2,6-Difluoro-4-methoxyphenyl)-2-propenoic Acid Ethyl Ester (CAS 858114-78-0)
- Diphenyl (7-methyloctyl)phosphonate (CAS 29739-76-2)
- 2-(Bromomethyl)-4-chloropyridine (CAS 856850-18-5)
- 2-Chloro-6-(propan-2-yloxy)naphthalene (CAS 1881330-67-1)
- 4,4'-(Hydrazine-1,2-diyl)bis(4-oxobutanoic acid) (CAS 5343-02-2)
- Semaglutide Impurity 167 (CAS CATO-C4X-2226167)
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