Process for crystallizing L-alpha-aspartyl-L-phenyl-alanine meth

Details Process for crystallizing L-alpha-aspartyl-L-phenyl-alanine meth Process for crystallizing L-alpha-aspartyl-L-phenyl-alanine meth

1989-01-03

1991-08-20

Gray, Bruce

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C07C22400

Patent

active

050416073

ABSTRACT:
A 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.

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