1,2-Ethanediamine, N-(5-bromoselenophene-2-yl)-N',N'-dimethyl-N-2-pyridinyl- 10097-93-5 23140-06-9 N,N-Dimethyl-N'-alpha-pyridyl-N'-(5-bromoselenophene-2-yl)ethylenediamine N-(5-Bromoselenophene-2-yl)-N',N'-dimethyl-N-2-pyridinyl-1,2-ethanediamine Sebrin Selenophene-6