intermediates all agrochemical pharmaceutical 4,6-dichloropyrimidine 1193-21-1 4,6-dichloropyrimidine more> chloropivaloyl chloride 4300-97-4 chloropivaloyl chloride more> pivaloyl chloride 3282-30-2 pivaloyl chloride more> (chloromethyl)dimethylchlorosilane 1719-57-9 (chloromethyl)dimethylchlorosilane more>