2,4-Dichlorothiazole4175-76-2100 % similar 2-Chlorothiazole3034-52-436 % similar 2,6-Dichloropyridine2402-78-035 % similar 2,4,6-Trichloropyrimidine3764-01-033 % similar 2,6-Dichloropyrazine4774-14-533 % similar 2,4,6-Trichloropyridine16063-69-732 % similar 6-Chloroimidazo[2,1-B]thiazole23576-81-031 % similar 3,6-Dichloropyridazine141-30-030 % similar