ethylglyoxal bis(guanylhydrazone)

1-Ethylglyoxal bis(amidinohydrazone)

2-Oxobutanol bis[(aminoiminomethyl)hydrazone]

2-Oxobutanal bis[(aminoiminomethyl)hydrazone]

1,1'-[(Ethylethanediylidene)dinitrilo]diganidine

2,2'-(1-Ethyl-1,2-ethanediylidene)bis(hydrazinecarbimide amide)