2-[10-(diaminomethylideneamino)decyl]guanidine 2-(10-guanidinodecyl)guanidine EINECS 203-848-1 N,N'''-1,10-Decanediylbisguanidine Biomol-NT_000185 NCGC00024699-01 BPBio1_001182 Tocris-0635 NCGC00024699-02