2-Hydroxy-N-(2-((S)-1,6,7,8-tetrahydro-2H-indeno[5,4-b]furan-8-yl)ethyl)propanamide; 2-hydroxy-N-[2-[(8S)-2,6,7,8-tetrahydro-1H-cyclopenta[e][1]benzofuran-8-yl]ethyl]propanamide; 2-Hydroxy-N-[2-[(8S)-1,6,7,8-tetrahydro-2H-cyclopenta[e]benzofuran-8-yl]ethyl]-propanamide; Propanamide,2-hydroxy-N-[2-[(8S)-1,6,7,8-tetrahydro-2H-indeno[5,4-b]furan-8-yl]ethyl]; Ramelteon Metabolite M-II (mixture of R and S at the hydroxy position); Ramelteon Impurity 19; Ramelteon Metabolite M2; (R,S)-hydroxy Ramelteon Metabolite M-II
