碘化乙烯, Vinyl iodide

5-乙烯基尿嘧啶, 5-Vinyluracil

呫吨-9-甲酸, Xanthene-9-carboxylic Acid

对二亚甲苯二胺, p-Xylylenediamine

溴化镱(III)水合物, Ytterbium(III) bromide hydrate

氧化镱(III), Ytterbium(III) Oxide

溴化钇(III), Yttrium(III) bromide

氟化钇(III), Yttrium(III) fluoride

氧化钇(III), Yttrium(III) Oxide

沸石 β, Zeolite beta