| CAS No. | 1706464-46-1 |
| Molecular Formula | C9H10I2N2O2 |
| Molecular Weight | 432.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
4,5-Diiodo-2-(tetrahydro-2H-pyran-4-yl)pyridazin-3(2H)-one (CAS 1706464-46-1), molecular formula C9H10I2N2O2 and molecular weight 432.00 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4,5-Diiodo-2-(tetrahydro-2H-pyran-4-yl)pyridazin-3(2H)-one (C9H10I2N2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, iodine substitution. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 432.00 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
As a certified reference material (CRM), 4,5-Diiodo-2-(tetrahydro-2H-pyran-4-yl)pyridazin-3(2H)-one 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.
| Molecular Formula | C9H10I2N2O2 |
| Molecular Weight | 432.00 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |