Novel AC regioisomer cationic cyclodextrins have been successfully prepared with azide/alkyne click chemistry. The clicked CDs were explored for the enantioseparation of acidic racemates in capillary electrophoresis.
申请人:THE BOARD OF TRUSTEES OF
THE LELAND STANFORD JUNIOR UNIVERSITY
公开号:EP0485370A2
公开(公告)日:1992-05-13
Chiral compounds may be separated by a process comprising placing the compounds in an electroosmotically pumpable chiral support electrolyte in an electrokinetic zone, and applying an effective electrokinetic potential to the support electrolyte in the zone for a period effective to separate the chiral compounds.
Tamper-resistant authentication mark for use in product or product packaging authentication
申请人:——
公开号:US20040023397A1
公开(公告)日:2004-02-05
A method of authenticating products or packaging by analyzing key ingredients on products or on product packaging is disclosed. Light-sensitive compounds can be used to identify the product or product packaging. The product or product package may include visible or invisible ink containing a particular light-sensitive compound. One or more light-sensitive compounds and ink, if used, may be printed in one or more locations on the product or product packaging to produce an authentication mark to inhibit inadvertent or intentional removal of the mark, thereby rendering the mark tamper-resistant. The mark is sealed to isolate the mark from the environment. A device may be used to irradiate the mark and read light absorption or emission. A controller determines the authenticity of the mark by comparing the emitted or absorbed properties to a standard.