英文别名N-(2-(2,6,7,8-tetrahydro-1h-indeno[5,4-b]furan-8-yl)ethyl)isobutyramide; Propanamide, 2-methyl-N-[2-[(8S)-1,6,7,8-tetrahydro-2H-indeno[5,4-b]furan-8-yl]ethyl]; ramelteon impurity D; Ramelteon Impurity 26; (S)-N-(2-(1,6,7,8-Tetrahydro-2H-indeno[5,4-b]furan-8-yl)ethyl)isobutyramide; Ramelteon Imputiry D; Ramelteon-4 
