4-Methyl-2H-pyran-2-one CAS 22682-12-8
| CAS No. | 22682-12-8 |
| Molecular Formula | C6H6O2 |
| Molecular Weight | 110.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-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.
4-Methyl-2H-pyran-2-one (CAS 22682-12-8), molecular formula C6H6O2 and molecular weight 110.11 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Methyl-2H-pyran-2-one (C6H6O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 110.11 g/mol, it falls into the low-molecular-weight range. 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.) | 1963 |
Recommended Standards
- 4-Methoxypyrimidine (CAS 6104-41-2)
- 4-Methyl-3(2H)-pyridazinone (CAS 33471-40-8)
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- 4-Methylfuran-2-carbaldehyde (CAS 33342-49-3)
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