Product Name:L-Tryptophan

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

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