Process for crystallization of L-phenylalanine monomethyl sulfat

Details Process for crystallization of L-phenylalanine monomethyl sulfat Process for crystallization of L-phenylalanine monomethyl sulfat

1995-04-12

1996-12-03

Chan, Nicky

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

Organic compounds

Sulfate esters

562445, C07C30324, C07C30342

Patent

active

055810098

ABSTRACT:
A process for improving the yield of crystallization of L-phenylalanine monomethyl sulfate from an aqueous solution containing L-phenylalanine and monomethyl sulfate, by adding an effective crystallization improving amount of a salt of an inorganic or organic acid with an alkali metal, an alkaline earth metal or ammonium, to the aqueous solution.

REFERENCES:
patent: 4399304 (1983-08-01), Matsuishi et al.
patent: 4803300 (1989-02-01), Hijiya et al.
patent: 5118840 (1992-06-01), Kano et al.
patent: 5466864 (1995-11-01), Takemoto et al.

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