Ammonium sulfide ((nh4)2(S5))12135-77-233 % similar Caesium sulfide12214-16-333 % similar Cerium(III) bromide14457-87-533 % similar Cerium(III) fluoride7758-88-533 % similar Cerium(III) chloride7790-86-533 % similar Cerium(III) iodide7790-87-633 % similar