一水紫尿酸, Violuric Acid Monohydrate

氧杂蒽酮, Xanthone

间二溴苄, m-Xylylene Dibromide

碳酸镱(III)水合物, Ytterbium(III) carbonate hydrate

氧化镱(III), Ytterbium(III) Oxide

水合碳酸钇(III), Yttrium(III) carbonate hydrate

碘化钇(III), Yttrium(III) iodide

氧化钇(III), Yttrium(III) Oxide

沸石 β, Zeolite beta

沸石 Y, Zeolite Y