Process for the separation of folinic acids
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United States of America Patent
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Feb 21, 1995
Grant Date -
N/A
app pub date -
Aug 16, 1993
filing date -
Jan 22, 1992
priority date (Note) -
Expired
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Abstract
The treatment of racemic calcium folinate with a sodium salt of ethylendiaminotetraacetic acid and, preferably, calcium cloride determines the separation of a precipitate, whose mother liquors result enriched in a calcium salt of the levofolinic acid, purifiable through repeated crystallizations.
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