The Complete List of Suppliers for L-Tryptophan,N-[[[(1S)-2-[[(1S,2S)-2-[[(2S)-2-amino-3-(3-hydroxyphenyl)-1-oxopropyl]methylamino]-1-[[[(Z)-[(4R,5R)-5-(3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)dihydro-4-hydroxy-2(3H)-furanylidene]methyl]amino]carbonyl]propyl]amino]-1-methyl-2-oxoethyl]amino]carbonyl]-