PYRROLOQUINOLINE QUINONE IN FREE FORM

An object of the present invention is to provide a method for conveniently producing pyrroloquinoline quinone in the free form without any organic solvent or ion-exchange resin and highly-pure crystals thereof. According to the present invention, there is provided a production method of pyrroloquino...

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Bibliographic Details
Main Authors IKEMOTO KAZUTO, EDAHIRO JUNICHI
Format Patent
LanguageEnglish
Published 06.09.2012
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:An object of the present invention is to provide a method for conveniently producing pyrroloquinoline quinone in the free form without any organic solvent or ion-exchange resin and highly-pure crystals thereof. According to the present invention, there is provided a production method of pyrroloquinoline quinone in the free form and highly-pure crystals thereof, wherein the production method comprises preparing a solution having a pH of 1.5 or less by dissolving an alkali metal salt of pyrroloquinoline quinone to obtain a precipitate.
Bibliography:Application Number: US201013508106