7-Phenylpyrido(3',2'-4,5)-thieno(3,2-d)-1,2,3-triazine-4(3H)-one 76993-14-1 Pyrido(3',2':4,5)thieno(3,2-d)-1,2,3-triazin-4(1H)-one, 7-phenyl- Rhc 3414 Rhc-3414