Process for precipitating cytosine from alkaline solutions...

Details Process for precipitating cytosine from alkaline solutions... Process for precipitating cytosine from alkaline solutions...

C - Chemistry, Metallurgy

07

D

260/255, 260/261

C07D 239/47 (2006.01) C07D 239/46 (2006.01)

Patent

CA 1330080

ABSTRACT The invention relates to an improved process for precipitating cytosine from an aqueous solution of an alkali or alkaline earth metal salt of cytosine using sulphuric acid. An aqueous solution of the cytosine salt, at elevated tempera- ture, is adjusted to a pH in the range 2 to 7 by means of an organic or inorganic acid, preferably sulphuric acid, the solution is freed of solid constituents and the cytosine is precipitated with sulphuric acid as the aqueous solution cools.

609432

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