Invention Grant
- Patent Title: Calcium salt of pyrroloquinoline quinone
- Patent Title (中): 吡咯并喹啉醌的盐
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Application No.: US13825228Application Date: 2011-09-22
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Publication No.: US08969563B2Publication Date: 2015-03-03
- Inventor: Kazuto Ikemoto , Masahiko Nakano
- Applicant: Kazuto Ikemoto , Masahiko Nakano
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Gas Chemical Company, Inc.
- Current Assignee: Mitsubishi Gas Chemical Company, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2010-211883 20100922
- International Application: PCT/JP2011/071697 WO 20110922
- International Announcement: WO2012/039474 WO 20120329
- Main IPC: C07D471/04
- IPC: C07D471/04
Abstract:
An object of the present invention is to provide an industrially useful method for producing a calcium salt of pyrroloquinoline quinone, without using large amounts of organic solvents, and highly pure crystals produced thereby. According to the present invention, a highly pure calcium salt of pyrroloquinoline quinone can be produced by reacting an alkali metal salt of pyrroloquinoline quinone with a source of calcium ions.
Public/Granted literature
- US20130225632A1 CALCIUM SALT OF PYRROLOQUINOLINE QUINONE Public/Granted day:2013-08-29
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