6-Methyl-2H-pyran-2,4(3H)-dione CAS 541-98-0
| CAS No. | 541-98-0 |
| Molecular Formula | C8H6F2N2O2 |
| Molecular Weight | 200.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 200.14 g/mol gives 6-Methyl-2H-pyran-2,4(3H)-dione distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
6-Methyl-2H-pyran-2,4(3H)-dione (CAS 541-98-0), molecular formula C8H6F2N2O2 and molecular weight 200.14 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, 6-Methyl-2H-pyran-2,4(3H)-dione is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 200.14 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.
As a certified reference material (CRM), 6-Methyl-2H-pyran-2,4(3H)-dione 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 | C8H6F2N2O2 |
| Molecular Weight | 200.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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 DMSO, DMF, methanol |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
- 6-Amino-2,2-difluoro-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 575473-95-9)
- Methyl 2-(3,4-difluorophenyl)-2-oxoacetate (CAS 220239-71-4)
- 4-Deoxy-4,4-difluoro-D-ribo-hexitol (CAS 685516-98-7)
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