135489-05-3 8-((Phenylmethyl)thio)isothiazolo(4',5':4,5)thieno(3,2-d)-1,2,3-triazin-4(1H)-one BRN 4268868 Isothiazolo(4',5':4,5)thieno(3,2-d)-1,2,3-triazin-4(1H)-one, 8-((phenylmethyl)thio)-