117829-28-4 3-(3,5-Di-tert-butyl-4-hydroxyphenyl)-6,7-dihydro-2H-imidazo(2,1-b)(1,3,4)thiadiazine HCl Phenol, 2,6-bis(1,1-dimethylethyl)-4-(6,7-dihydro-2H-imidazo(2,1-b)(1,3,4)thiadiazin-3-yl)-, hydrochloride