L-tryptophan

L-tryptophan cas no.: 73-22-3 molecular formula: c11h12n2o2 molecular weight: 204.23 properties: white to cream crystal or crystalline powder. odorless or with slight odor and bitter taste. packing: 25kg fiber drum, or upon clients\' requests. storage: avoid light, stored in dry and cool place; no mixing with toxic and hazardous articles. it is non-dangerous article, and can be transported as common chemicals; handle with care; protect against sunlight and rain.