1,6-Hexanediamine, N,N''-(dithiodi-2,1-ethanediyl)bis(N'-(1H-pyrrol-2-ylmethyl)- 92588-09-5 N,N''-(Dithio-2,1-ethanediyl)bis(N'-(pyrrol-2-ylmethyl)-1,6-hexanediamine) Pyrextramine