(2S)-2-amino-3-(5-hydroxy-1H-indol-3-yl)propanoic acid (2S)-2-amino-3-(5-hydroxy-1H-indol-3-yl)propionic acid 4350-09-8 56570_FLUKA Lopac0_000627 NCGC00091062-01 NCGC00015526-01 L-5-HTP CHEBI:17780 H9772_SIGMA L-2-Amino-3-(5-hydroxyindolyl)propionic acid ST048776 EU-0100627 C00643 107751_ALDRICH NCGC00091062-04 Lopac-H-9772 ZINC00895330