| CAS No. | 66298-49-5 |
| Molecular Formula | C5H4I2N2 |
| Molecular Weight | 345.91 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
CATO supplies 4,6-Diiodo-2-methylpyrimidine (CAS 66298-49-5), a certified reference material (molecular formula C5H4I2N2, MW 345.91 g/mol) for analytical method development and quality control.
4,6-Diiodo-2-methylpyrimidine (C5H4I2N2) contains a nitrile group, iodine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
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.
| Molecular Formula | C5H4I2N2 |
| Molecular Weight | 345.91 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 |
| 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 |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |