P,P'-(1,2-dihydroxy-ethane-1,2-diyl)-bis-phosphonic acid tetraethyl ester

2-diethoxyphosphoryl-2-hydroxyacetaldehyde

tert-butyl 2-imidazol-1-ylacetate

1,3-dibutyl-1,2-dihydroimidazol-1-ium,chloride

N-[2-(diphenylhydrazinylidene)ethylideneamino]-N-phenylaniline