
Ethyl 2-(methylthio)-5-pyrimidinecarboxylate is a key heterocyclic building block extensively used in pharmaceutical synthesis, particularly for antiviral and antitumor agents. This compound features a melting point of 38-40°C and boiling point of 313.5±15.0°C at 760 mmHg, with a predicted density of 1.24±0.1 g/cm³. The pyrimidine core with methylthio and ester functionalities makes it valuable for nucleoside analog synthesis. Storage should be in sealed containers at 2-8°C, protected from light and moisture. Safety precautions include wearing protective gloves/eyewear due to potential irritation (GHS Category 2). Its structural features enable diverse transformations in medicinal chemistry applications.