| CAS No. | 477713-87-4 |
| Molecular Formula | C20H20N3OS |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 477.36 g/mol gives 1-Methyl-3-{4-methyl-5-[(2E)-3-[(4-methylphenyl)amino]prop-2-enoyl]-1,3-thiazol-2-yl}pyridin-1-ium iodide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-Methyl-3-{4-methyl-5-[(2E)-3-[(4-methylphenyl)amino]prop-2-enoyl]-1,3-thiazol-2-yl}pyridin-1-ium iodide (CAS 477713-87-4), molecular formula C20H20N3OSI and molecular weight 477.36 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1-Methyl-3-{4-methyl-5-[(2E)-3-[(4-methylphenyl)amino]prop-2-enoyl]-1,3-thiazol-2-yl}pyridin-1-ium iodide (C20H20N3OSI) is characterized by a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, iodine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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 | C20H20N3OS I |
| Molecular Weight | 477.36 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |