1-Methyl-6-oxo-N-((4-(thiophen-2-yl)tetrahydro-2H-pyran-4-yl)methyl)-1,6-dihydropyridazine-3-carboxamide CAS 1324691-20-4
| CAS No. | 1324691-20-4 |
| Molecular Formula | C16H19N3O3S |
| Molecular Weight | 333.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-Methyl-6-oxo-N-((4-(thiophen-2-yl)tetrahydro-2H-pyran-4-yl)methyl)-1,6-dihydropyridazine-3-carboxamide (CAS 1324691-20-4), molecular formula C16H19N3O3S and molecular weight 333.41 g/mol, is a CATO reference standard with documented purity and traceability.
1-Methyl-6-oxo-N-((4-(thiophen-2-yl)tetrahydro-2H-pyran-4-yl)methyl)-1,6-dihydropyridazine-3-carboxamide (C16H19N3O3S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; 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).
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.
Physical & Chemical Properties
| Molecular Formula | C16H19N3O3S |
| Molecular Weight | 333.41 g/mol |
| 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 |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
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- 2-(1-Methyl-1H-indol-3-yl)ethanol (CAS 2532-74-3)
- Semaglutide impurity 290 (CAS CATO-C4X-2226290)
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