competition experiments showed that the relative order of potency of a variety of indoles for inhibition of 2- [ 125i ] iodomelatonin binding site to hamster brain membranes was as follows : 6-chloromelatonin greater than or equal to 2-iodomelatonin greater than n-acetylserotonin greater than or equal to 6-methoxymelatonin greater than or equal to melatonin greater than 6-hydroxymelatonin greater than or equal to 6,7-dichloro-2-methylmelatonin greater than 5-methoxytryptophol greater than 5-methoxytryptamine greater than or equal to 5-methoxy-n , n-dimethyltryptamine greater than n-acetyltryptamine greater than serotonin greater than 5-methoxyindole ( inactive ) .
C0000589
methoxytryptamine
C0036751
serotonin