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6-(2-hydroxyethyl)-7-methyl-2,3-dihydro-5H-thiazolo[3,2-a]pyrimidin-5-one; CAS No.: 86487-53-8; 6-(2-hydroxyethyl)-7-methyl-2,3-dihydro-5H-thiazolo[3,2-a]pyrimidin-5-one. PROPERTIES: 6-(2-Hydroxyethyl)-7-methyl-2,3-dihydro-5H-thiazolo[3,2-a]pyrimidin-5-one presents as a white to pale yellow powder with a characteristic pyrimidine odor. The compound demonstrates hygroscopic nature requiring storage in desiccators with appropriate drying agents. It exhibits zwitterionic character at physiological pH and shows good solubility in water above 30 C. Safety data indicates potential for causing serious eye damage necessitating face shields during handling as per GHS label elements H318. APPLICATIONS: 6-(2-Hydroxyethyl)-7-methyl-2,3-dihydro-5H-thiazolo[3,2-a]pyrimidin-5-one serves as an intermediate in the preparation of antiviral agents documented in virology research publications. Its hydroxyethyl substituent enables formation of phosphoramidate prodrugs useful in improving cellular uptake as reported in nucleoside chemistry journals. Furthermore, the compound contributes to synthesis of fluorescent dyes for biomolecular labeling described in photochemistry communications.