6-(Chloromethyl)-4-methyl-2H-pyran-2-one CAS 4394-75-6
| CAS No. | 4394-75-6 |
| Molecular Formula | C7H7ClO2 |
| Molecular Weight | 158.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 158.58 g/mol gives 6-(Chloromethyl)-4-methyl-2H-pyran-2-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 6-(Chloromethyl)-4-methyl-2H-pyran-2-one (CAS 4394-75-6), a certified reference material (molecular formula C7H7ClO2, MW 158.58 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 6-(Chloromethyl)-4-methyl-2H-pyran-2-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 158.58 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H7ClO2 |
| Molecular Weight | 158.58 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
Related Chloromethyl Standards
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Recommended Standards
- 5-Chloro-2-methoxyphenol (CAS 3743-23-5)
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- Piribedil Impurity 3 (CAS CATO-C4X-28133)
- 8-Methoxyimidazo[1,2-a]pyridine-6-carboxylic acid hydrochloride (CAS 2060033-77-2)
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- 1-Cyclopropanecarbonyl-9b-phenyl-1H,2H,3H,5H,9bH-imidazo[2,1-a]isoindol-5-one (CAS 338414-92-9)
- N-(3-Methylbutyryl)glycine-2,2-d2 (CAS 1219795-09-1)
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- 4-Methyl-5-(pyrrolidin-2-yl)pyridin-2-amine (CAS 1270431-81-6)
- Insulin Degludec Impurity 3 (CAS CATO-C4X-21573)
Why CATO?
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