5,6-Difluoro-5-Methyldihydro-2,4(1H,3H)-Pyrimidinedione CAS 294850-85-4
| CAS No. | 294850-85-4 |
| Molecular Formula | C5H6F2N2O2 |
| Molecular Weight | 164.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5,6-Difluoro-5-Methyldihydro-2,4(1H,3H)-Pyrimidinedione (C5H6F2N2O2) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 164.11 g/mol, it falls into the medium-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).
5,6-Difluoro-5-Methyldihydro-2,4(1H,3H)-Pyrimidinedione (CAS 294850-85-4), molecular formula C5H6F2N2O2 and molecular weight 164.11 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C5H6F2N2O2 |
| Molecular Weight | 164.11 g/mol |
| Appearance | 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 5-Amino-3-methylbenzofurane (CAS 851768-32-6)
- 5-Bromo-2-chloro-N-methylpyridin-3-amine (CAS 886372-71-0)
- N-γ-Linolenoylethanolamine (CAS 150314-37-7)
- Benzyl 4-Nitrophenyl Carbonate (CAS 13795-24-9)
- 2-(((3-Chloro-4-methylphenyl)amino)methyl)isoindoline-1,3-dione (CAS 84501-73-5)
- 2-Fluoro-N-methoxy-N-methylbenzamide (CAS 198967-24-7)
- Ethyl 3-(1H-pyrazol-1-yl)butanoate (CAS 90565-82-5)
- 4-[(Cyclopropylcarbonyl)amino]-3-fluorobenzoic Acid (CAS 1314406-43-3)
- 1-(4-(Difluoromethoxy)phenyl)imidazolidin-2-one (CAS 1550059-18-1)
- Semaglutide impurity 255 (CAS CATO-C4X-2226255)
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