L-Tryptophan powder, CAS No.73-22-3, essential amino acid manufactured by fermentation from carbohydrate sources, free of materials of animal origin. Uses: L-Tryptophan uses in food, protein powder, skin care cosmetics, drinks as supplement. L-tryptophan is used as an active ingredient in antidepressant therapy. Other uses of L-tryptophan include weight loss and reduction of PMS. Function: plays a key role in balancing sleep and mood patterns.

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L-Tryptophan Specification
ITEMS STANDARDs
Appearance White crystals or crystalline powder
Assay 98% Min
Specific Rotation -29.0~ -32.3
Loss on Drying 0.5% Max
Heavy Metals 20mg/kg Max
Arsenic(As2O3) 2mg/kg Max
Residue on ignition 0.5% Max