4,5-Dichloro-6-methoxy-2-methylpyrimidine CAS 126804-42-0
| CAS No. | 126804-42-0 |
| Molecular Formula | C6H6Cl2N2O |
| Molecular Weight | 193.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO supplies 4,5-Dichloro-6-methoxy-2-methylpyrimidine (CAS 126804-42-0), a certified reference material (molecular formula C6H6Cl2N2O, MW 193.03 g/mol) for analytical method development and quality control.
4,5-Dichloro-6-methoxy-2-methylpyrimidine (C6H6Cl2N2O) contains an amide group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C6H6Cl2N2O |
| Molecular Weight | 193.03 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 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 |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloro Standards
- 2,4-Dichloro-6-(methoxymethyl)pyrimidine (CAS 1037543-27-3)
- 3,5-Dichloro-1-ethylpyrazin-2(1H)-one (CAS 1187017-35-1)
- 2,5-Dichloro-4-methoxy-6-methylpyrimidine (CAS 1192479-55-2)
- 1-(4,5-Dichloro-1H-imidazol-1-yl)propan-2-one (CAS 1219557-54-6)
- 3,5-Dichloro-6-methoxypyridin-2-amine (CAS 1261269-27-5)
- 3,5-Dichloro-4-methoxypyridin-2-amine (CAS 1261269-31-1)
- 3,5-Dichloro-2-(hydroxymethyl)phenol (CAS 1314922-16-1)
- 2,4-Dichloro-5-methoxy-6-methylpyrimidine (CAS 1349829-73-7)
Recommended Standards
- 4-Chloro-1,3-dimethyl-1H-pyrazole-5-carbonyl chloride (CAS 128141-47-9)
- 1-(2,4-Dichloropyrimidin-5-yl)ethan-1-ol (CAS 130825-17-1)
- 2-(4-Chloro-1H-pyrazol-1-yl)propanoyl chloride (CAS 1217862-81-1)
- 2,5-Dichloro-4-ethoxypyrimidine (CAS 1351762-11-2)
- 4-(4-Bromo-1h-pyrazol-1-yl)-2-(ethylamino)-2-methylbutanamide (CAS 1250701-43-9)
- 5-Methyl-1,3-diphenyl-1H-pyrazole-4-carboxylic acid (CAS 15409-48-0)
- Dipentylstannanone (CAS 2273-46-3)
- 4-Methyl-3,4-dihydro-2H-benzo[b][1,4]oxazine-7-sulfonyl chloride (CAS 368869-93-6)
- JWH 122 N-(4-pentenyl) Analog (CAS 1445577-68-3)
- 5-Methoxy-4-oxo-1,4-dihydropyridine-2-carboxylic acid (CAS 103878-37-1)
- Vincristine Impurity 2 (CAS 910580-56-2)
- 1-(3-Morpholinophenyl)ethan-1-one (CAS 59695-23-7)
- N-(5-Chloro-2-fluorophenyl)-2-(cyclopropylamino)acetamide (CAS 1184760-82-4)
- Palmitoyl Hexapeptide-12 TFA salt (CAS 171263-26-6(Free Base))
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