2-(4-Nitro-phenyl)-4,6-diphenyl-1,2,3,4-tetrahydro-[1,2,4,5]tetrazine

6-(4-Methoxy-phenyl)-2-(4-nitro-phenyl)-4-phenyl-1,2,3,4-tetrahydro-[1,2,4,5]tetrazine

2-(p-methoxyphenyl)-4-phenyl-6-(p-nitrophenyl)-1,2,3,4-tetrahydro-sym-tetrazine

N-tert-butyl-N-hydroxy-3-phenylprop-2-enamide

1,2-二苯肼