p having a specific substituent such as methoxy group; and R5 and R6 each denotes a cyano group or the like.)...http://www.google.com/patents/US20050052133?utm_source=gb-gplus-sharePatent US20050052133 - Bis(aminostyryl)naphthalene compound, synthesis intermediate thereof, and process for production thereofAdvanced Patent SearchPublication numberUS20050052133 A1Publication typeApplicationApplicati