氧化钬(III), Holmium(III) oxide

邻羧基苯乙酸, Homophthalic Acid

腐殖酸钠盐, Humic acid sodium salt

4,5-二氰咪唑-2-肼溴化氢, 2-Hydrazino-2-imidazoline Hydrobromide

水合四氯金酸, Hydrogen tetrachloroaurate(III) hydrate

4'-羟基苯乙酮, 4'-Hydroxyacetophenone

4-羟基苯磺酸, 4-Hydroxybenzenesulfonic Acid

3-羟基苯甲酮, 3-Hydroxybenzophenone

4-羟基-2-丁酮, 4-Hydroxy-2-butanone

4-羟基香豆素, 4-Hydroxycoumarin