| CAS No. | 439111-34-9 |
| Molecular Formula | C20H19N3OS2 |
| Molecular Weight | 381.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
CATO manufactures 2-(Ethylthio)-7,9-dimethyl-4-(p-tolyloxy)pyrido[3',2':4,5]thieno[3,2-d]pyrimidine under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
2-(Ethylthio)-7,9-dimethyl-4-(p-tolyloxy)pyrido[3',2':4,5]thieno[3,2-d]pyrimidine (CAS 439111-34-9) is a high-purity analytical reference standard with the molecular formula C20H19N3OS2 and a molecular weight of 381.51 g/mol.
The molecular framework of 2-(Ethylthio)-7,9-dimethyl-4-(p-tolyloxy)pyrido[3',2':4,5]thieno[3,2-d]pyrimidine (C20H19N3OS2) is characterized by a steroid core, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
| Molecular Formula | C20H19N3OS2 |
| Molecular Weight | 381.51 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |