Min. Order Reference FOB Price
1000 kg US$1.30-3.60 / kg
Product Description
Products Description Free Sample 99% L-Tryptophan Powder / GMP Tryptophan Powder CAS 73-22-3 As an essential amino acid, L-Tryptophan is necessary for normal growth in infants and for nitrogen balance in adults, for human body, It can be used as a nutritional supplement for use as an ...