3-(4-oxocyclohexa-2,5-dien-1-ylidene)carbazamidine

1,4-Benzoquinone monoguanylhydrazone is a hydrazone derivative of p-Benzoquinone (B206580), an aromatic compound that is used to couple antigens and antibodies to marker substances such as erythrocytes. 1,4-Benzoquinone monoguanylhydrazone also exhibits potential antineoplastic activity.