蒽酮紫-79, Violanthrone-79

黄嘌呤, Xanthine

邻二溴亚二甲苯基, o-Xylylene Dibromide

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

氧化镱(III), Ytterbium(III) Oxide

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

六氟-乙酰丙酮钇(III), Yttrium(III) hexafluoro-2,4-pentanedionate

氧化钇(III), Yttrium(III) Oxide

沸石 β, Zeolite beta

沸石Y, Zeolite Y