Synonyms: Silicon,[[3-(dimethylamino)propyl]dimethylsilanolato-O]hydroxy[29H,31H-phthalocyaninato(2-)-N29,N30,N31,N32]-,(OC-6-23)-; 29H,31H-Phthalocyanine, silicon complex; Silanol,[3-(dimethylamino)propyl]dimethyl-, silicon complex; NSC 676418; Pc 4; Pc 4(photosensitizer); Photosensitizer Pc 4