28593-24-0 
 
19169-90-5 
 
8-benzenesulfonylmethyl-6-chloro-1,2,4triazolo4,3-<i>b</i>pyridazine 
 
1-benzenesulfonyl-2-benzenesulfonylmethyl-1a,6b-dihydro-1<i>H</i>-3,3a,5,6-tetraaza-cyclopropa<i>e</i>indene 
[1]TetrahedronLetters,2006,vol.47,p.4259-4261
58826-39-4 
 
19169-90-5 
 
3-benzenesulfonylmethyl-6-chloro-7-methyl-1,2,4triazolo4,3-<i>b</i>pyridazine 
 
1-benzenesulfonyl-2-benzenesulfonylmethyl-1a-methyl-1a,6b-dihydro-1<i>H</i>-3,3a,5,6-tetraaza-cyclopropa<i>e</i>indene 
[1]Katrusiak,Anna[TetrahedronLetters,2006,vol.47,#25,p.4259-4261]
[1]Katrusiak,Anna[TetrahedronLetters,2006,vol.47,#25,p.4259-4261]
[1]JournalofOrganicChemistry,1968,vol.33,p.1182-1185
[1]Liu,Fei;Li,Pixu[JournalofOrganicChemistry,2016,vol.81,#16,p.6972-6979]