Sulfate of 5,6,7,8-tetrahydro-l-erythro-biopterin and...

Details Sulfate of 5,6,7,8-tetrahydro-l-erythro-biopterin and... Sulfate of 5,6,7,8-tetrahydro-l-erythro-biopterin and...

C - Chemistry, Metallurgy

07

D

167/219, 260/242

C07D 475/04 (2006.01) A61K 31/505 (2006.01)

Patent

CA 1250837

Abstract of the Disclosure A sulfate of tetrahydrobiopterin having the formula (I): Image (I) and a process for preparing the same, which comprises crystallizing tetrahydrobiopterin from an aqueous medium containing sulfuric acid. The sulfate has a high crystallinity of the (6R)-form and the process easily give a sulfate of (6R)-form.

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