streptidine(2+) {[(1R,2s,3S,4R,5r,6S)-2,4,5,6-tetrahydroxycyclohexane-1,3-diyl]diazanediyl}bis(aminomethaniminium) 264.15351 MSXMXWJPFIDEMT-FAEUDGQSSA-P A guanidinium ion obtained by protonation of both guanidino groups of streptidine; major species at pH 7.3. streptidine +2 {[(1R,2s,3S,4R,5r,6S)-2,4,5,6-tetrahydroxycyclohexane-1,3-diyl]diimino}bis(aminomethaniminium) NC(=[NH2+])N[C@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](NC(N)=[NH2+])[C@@H]1O C8H20N6O4 CHEBI:184376 streptidine dication chebi_ontology InChI=1S/C8H18N6O4/c9-7(10)13-1-3(15)2(14-8(11)12)5(17)6(18)4(1)16/h1-6,15-18H,(H4,9,10,13)(H4,11,12,14)/p+2/t1-,2+,3-,4+,5-,6- 264.285 streptidine guanidinium ion