N1-(4,6-Dichloro-2-phenylpyrimidin-5-yl)-N1-phenyloxalamide CAS 59808-66-1
| CAS No. | 59808-66-1 |
| Molecular Formula | C18H12Cl2N4O2 |
| Molecular Weight | 387.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
N1-(4,6-Dichloro-2-phenylpyrimidin-5-yl)-N1-phenyloxalamide (CAS 59808-66-1), molecular formula C18H12Cl2N4O2 and molecular weight 387.22 g/mol, is a CATO reference standard with documented purity and traceability.
N1-(4,6-Dichloro-2-phenylpyrimidin-5-yl)-N1-phenyloxalamide (C18H12Cl2N4O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C18H12Cl2N4O2 |
| Molecular Weight | 387.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
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Recommended Standards
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- Polyquaternium-39 (CAS 25136-75-8)
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- Bis(2,2-difluoroethyl)amine (CAS 462-89-5)
- 4-Ethynyl-2-(trifluoromethyl)benzonitrile (CAS 239104-49-5)
- 7,7-Diphenyl-5,7-dihydroindeno[2,1-b]carbazole (CAS 1257220-52-2)
- 2,2-Bis(4-hydroxyphenyl)propane-phosgene Copolymer (CAS 25971-63-5)
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