Invention Application
- 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生产方法，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.: US20150031650A1Publication Date: 2015-01-29
- Inventor: Keiichi Nakamura , Takanori Aoki
- Applicant: SHOWA DENKO K.K.
- Applicant Address: JP Minato-ku, Tokyo
- Assignee: SHOWA DENKO K.K.
- Current Assignee: SHOWA DENKO K.K.
- Current Assignee Address: JP Minato-ku, Tokyo
- Priority: JP2012-278725 20121220
- International Application: PCT/JP2013/077784 WO 20131011
- Main IPC: A61K8/67
- IPC: A61K8/67 ; A61Q19/00
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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