维生素K1, Vitamin K{1}

黄嘌呤, Xanthine

二甲酚橙四钠盐, Xylenol Orange tetrasodium salt

邻亚二甲苯二氯, o-Xylylene Dichloride

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

氟化镱(III), Ytterbium(III) fluoride

氧化镱(III), Ytterbium(III) Oxide

溴化钇(III)水合物, Yttrium(III) bromide hydrate REacton®

氯化钇(III), Yttrium(III) chloride

碘化钇(III), Yttrium(III) iodide