Method of obtaining anhydrous phenylalanine crystals

Details Method of obtaining anhydrous phenylalanine crystals Method of obtaining anhydrous phenylalanine crystals

1995-09-26

1997-04-01

Barts, Samuel

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

Organic compounds

Carboxylic acids and salts thereof

562443, C07C22928

Patent

active

056167865

ABSTRACT:
A method of obtaining optically active anhydrous phenylalanine crystals from an aqueous solution containing optically active phenylalanine, which involves crystallizing and precipitating optically active phenylalanine from an optically active phenylalanine super-saturated solution at a temperature, T, wherein the super-saturated solution is required to have an osmotic pressure .pi. (mOsm/kg.H.sub.2 O) which is related to said temperature T in accordance with the following formula (I):

REFERENCES:
patent: 4399304 (1983-08-01), Matsuishi et al.

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