117829-33-1 2H-Imidazo(2,1-b)(1,3,4)thiadiazin-7(6H)-one, 3-(3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl)-, hydrobromide 3-(3,5-Di-t-butyl-4-hydroxyphenyl)-7-oxo-6,7-dihydro-2H-imidazo(2,1-b)(1,3,4)thiadiazine HBr