2-HEPTYNAL DIETHYL ACETAL

2H-PERFLUORO-5,8,11,14-TETRAMETHYL-3,6,9,12,15-PENTAOXAOCTADECANE

2-HYDROXYACETOPHENONE

2'-HYDROXY-1'-ACETONAPHTHONE

2-Hydroxy-1-naphthaldehyde

2-Hydroxy-1-naphthaldehyde

2-Hydroxy-2'-nitrobiphenyl

3,4-DIMETHOXY-2-HYDROXYBENZALDEHYDE

5-METHOXYSALICYLAMIDE