The chemical Ramelteon has a designated molecular formula of C16H21NO2 and a molecular weight of 259.349 g/mol. Synonyms may include: TAK-375, Rozerem, (S)-N-(2-(1,6,7,8-tetrahydro-2H-indeno-(5,4)furan-8-yl)ethyl)propionamide, UNII-901AS54I69, HSDB 7787 (ChemID).