4, 5-diaminopyrazole derivatives in dimer form, and use...
4,5-dIiminopyrazolines, processes for their preparation, and the
4-(2,4-diaminophenoxymethyl)-1,3-dioxolane secondary intermediat
4-(N-ethyl-N-2-hydroxyethyl)-amino-1-(2 hydroxyethyl)-amino-2-ni
4-Nitro,2-alkylbenzene azo-3-cyano-4-methyl-6-hydroxy-2-pyridone
4-Substituted benzothiazol-2-ylazo-N-c8-14-alkykl-N-(2'-cyanoeth