What is aroyl hydrazine?
Basic hydrazine is a molecule with the formula H2-N-N-H2. Methyl
hydrazine has one of the hydrogens replaced with a methyl group ie.
H(CH 3)-N-N-H2. An aroyl hydrazine has an aromatic ring group
attached instead eg. H (C6H5)-N-N-H2. There may be more then one
and up to four such substitutions eg. (C6H5)2-N-N-(C6H5)2