Synonyms: Melatonin, 3-(2-Acetamidoethyl)-5-methoxyindole, 5-Methoxy-N-acetyltryptamine, Circadin, Melatol, Melatonine, Melovine, N-Acetyl-5-methoxytryptamine, N-[2-(5-Methoxyindol-3-yl)ethyl]acetamide, NSC 113928, NSC 56423, Regulin, Acetamide, N-[2-(5-methoxy-1H-indol-3-yl)ethyl]- (9CI, ACI), Acetamide, N-[2-(5-methoxyindol-3-yl)ethyl]- (6CI, 8CI), N-[2-(5-Methoxy-1H-indol-3-yl)ethyl]acetamide (ACI), Melaxen, Slenyto