3-Amino-N-(2-(5-hydroxy-1H-indol-3-yl)ethyl)propanamide tartrate, hydrate 61059-59-4 Propanamide, 3-amino-N-(2-(5-hydroxy-1H-indol-3-yl)ethyl)-, (R-(R*,R*))-2,3-dihydroxybutanedioate (salt), hydrate (1:1:1)