(R)-2-Amino-N-(2-(5-hydroxy-1H-indol-3-yl)ethyl)-3-mercaptopropanamide tartrate 36933-14-9 5-Hydroxytryptamide of cysteine tartrate Propanamide, 2-amino-N-(2-(5-hydroxy-1H-indol-3-yl)ethyl)-3-mercapto-, (R)-, (R-(R*,R*))-2,3-dihydroxybutanedioate (1:1) (salt)