Answer: azines

AnswerCrossword Clue
AZINESNitrogenous compounds.
azinesAZINE, a type of chemical compound
azinesa compound of the general formula RCH=NN=CHR or R2C=NN=CR2 formed by the action of hydrazine on aldehydes or ketones
azinesany of a group of six-membered heterocyclic compounds containing one or more nitrogen atoms in the ring, the number of nitrogen atoms present being indicated by a prefix, as in diazine or triazine