Sulfate of 5,6,7,8-tetrahydro-L-erythro-biopterin and process for preparing the same

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United States of America Patent

PATENT NO 4649197
SERIAL NO

06712813

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A sulfate of tetrahydrobiopterin having the formula (I): ##STR1## and a process for preparing the same, which comprises crystallizing tetrahydrobiopterin from an aqueous medium containing sulfuric acid. The sulfate of the (6R)-form of (1) has a high crystallinity and the process easily gives a sulfate of the (6R)-form

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Patent OwnerAddress
KANEGAFUCHI KAGAKU KOGYO KABUSHIKI KAISHA2-4 3-CHOME NAKANOSHIMA KITA-KU OSAKA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Azuma, Masaaki Kobe, JP 12 168
Ohashi, Takehisa Kobe, JP 25 108
Uchino, Hayashi Ako, JP 1 11
Watanabe, Kiyoshi Akashi, JP 223 2462

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