Invention Grant
US09351915B2 Ascorbic acid derivative composition and production method of the same, ascorbic acid derivative solution, and skin external preparation
有权
抗坏血酸衍生物组合物及其制备方法相同，抗坏血酸衍生物溶液和皮肤外用制剂
- Patent Title: Ascorbic acid derivative composition and production method of the same, ascorbic acid derivative solution, and skin external preparation
- Patent Title (中): 抗坏血酸衍生物组合物及其制备方法相同，抗坏血酸衍生物溶液和皮肤外用制剂
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Application No.: US14378504Application Date: 2013-10-11
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Publication No.: US09351915B2Publication Date: 2016-05-31
- Inventor: Keiichi Nakamura , Takanori Aoki
- Applicant: SHOWA DENKO K.K.
- Applicant Address: JP Tokyo
- Assignee: Showa Denko K.K.
- Current Assignee: Showa Denko K.K.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2012-278725 20121220
- International Application: PCT/JP2013/077784 WO 20131011
- International Announcement: WO2014/097721 WO 20140626
- Main IPC: C07D407/00
- IPC: C07D407/00 ; A61K8/67 ; A61Q19/00 ; C07F9/655 ; A61K8/55
Abstract:
An ascorbic acid derivative composition of a first aspect according to the present invention consists of a salt of a compound (1) represented by a general formula (1) shown below; and a salt of a compound (2) represented by a general formula (2) shown below, wherein a ratio of the salt of the compound (2) with respect to a total amount of the salt of the compound (1) and the salt of the compound (2) is from 0.1 to 10% by mass, wherein R1 represents a linear or branched alkyl group of 6 to 20 carbon atoms, R2 represents a linear or branched alkyl group of 6 to 20 carbon atoms, and R1 and R2 are the same or are different from each other.
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