Sell L-Tryptophan,DL-Tryptophan,D-tryptophan

We are a private-owned company dealing specifically in the export of aminoacids,we have three factories,mainly produce L-aminoacids,N-acetyl-L-aminoacids which are used as food additives and pharmaceutical intermediates.We fully conducts under ISO9001:2000 international quality management system and controls the whole production process including purchase of raw materials,production process and test of final product,which guarantees the output of quality products.With the idea of doing best amino acids in china,we tried and will always trys our best to meet the customers requirement!
L-Tryptophan 73-22-3
D-Tryptophan 153-94-6
DL-Tryptophan 1954-12-6
N-Acetyl-L-Tryptophan 1218-34-4
N-Acetyl-DL-Tryptophan 87-32-1 
D-Tryptophan Methyl Ester Hydrochloride 14907-27-8