Method of dissolving crystals of L-.alpha.-aspartyl-L-phenyl ala

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters

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C07C22400

Patent

active

058592822

ABSTRACT:
A method for dissolving crystalline L-alpha-aspartyl-L-phenyl alanine methyl ester product is disclosed. The product is obtained by crystallizing the ester from an aqueous solution, by cooling. The initial concentration of ester in the aqueous solution used provides at least 10 grams of precipitated solid phase per liter of solution. The solution is cooled through conductive heat transfer without effecting forced flow to form a sherbet-like pseudo solid phase

REFERENCES:
patent: 5097060 (1992-03-01), Naruse et al.
patent: 5543554 (1996-08-01), Ohura et al.

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