DL-Tryptophan

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DL-Tryptophan
Posting date : Mar 21, 2012
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HS-CODE
31-
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Detailed Description
White to yellow white crystal or crystalline powder, odorless or with slight odor, slightly sweet. L-type is bitter; Sweetness of D-type is similar to that of cane sugar. PH value of 0.2% aqueous solution: 5.5~7.0, melting point: 295℃(decomposed). It has weak resistance to acid and light. It is soluble in water(0.4%, 25℃), diluted acid and alkali, slightly soluble in ethanol. Use: Used as pharmaceutical intermediate, biochemical reagent.

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