5-Methyl-2H-pyran-2-one CAS 51270-32-7
| CAS No. | 51270-32-7 |
| Molecular Formula | C6H6O2 |
| Molecular Weight | 110.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Methyl-2H-pyran-2-one is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 5-Methyl-2H-pyran-2-one (CAS 51270-32-7), a certified reference material (molecular formula C6H6O2, MW 110.11 g/mol) for analytical method development and quality control.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 5-Methyl-2H-pyran-2-one is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 110.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C6H6O2 |
| Molecular Weight | 110.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
Recommended Standards
- 5-Methyl-2(1H)-pyrazinone (CAS 20721-17-9)
- 5-Methylfuran-3-carbaldehyde (CAS 87241-04-1)
- 5-Methoxypyrimidine (CAS 31458-33-0)
- 5-Oxopyrrolidine-2-carbonitrile (CAS 5626-50-6)
- 3-(4-Bromo-2-fluorophenyl)-4-methylpyridine (CAS 1187163-43-4)
- 1-Chloro-3,4-dimethylisoquinoline (CAS 15787-20-9)
- Dihydrozeatin Riboside (CAS 22663-55-4)
- (3-((Diethylamino)methyl)phenyl)methanol (CAS 91271-56-6)
- 6-(tert-Butyl)-3-isopropyl-6,7-dihydroisothiazolo[5,4-d]pyrimidin-4(5H)-one (CAS 58045-26-4)
- 4-Nitro-1,3-dihydrobenzo[c]isothiazole 2,2-dioxide (CAS 152339-79-2)
- 1-(2-Chlorophenyl)-2-(3-hydroxypiperidin-1-yl)ethan-1-one (CAS 1338680-65-1)
- 3-Bromo-1H-indazol-6-ol (CAS 117883-42-8)
- 2-(Thiophen-2-yl)but-3-yn-2-ol (CAS 861052-53-1)
- Anorexigenic Peptide (CAS 69275-10-1)
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