二盐酸组胺, Histamine Dihydrochloride

氯化钬(III),无水, Holmium(III) chloride

乙酰丙酮钬(III), Holmium(III) 2,4-pentanedionate

高哌嗪, Homopiperazine

二盐酸肼, Hydrazine Dihydrochloride

2-肼喹啉, 2-Hydrazinoquinoline

水合四硝酸金(III)酸, Hydrogen tetranitratoaurate(III) hydrate

3-羟基苯甲醛, 3-Hydroxybenzaldehyde

4-羟基苯甲酰肼, 4-Hydroxybenzhydrazide

4-羟基苯酰丙烯酸, 4-Hydroxybenzoylacrylic acid