128366-11-0 5,6-Dihydro-7H-pyrrole(1,2-a)imidazol-2-yl-methylsulfone 5H-Pyrrolo(1,2-a)imidazole, 6,7-dihydro-2-(methylsulfonyl)- 6,7-Dihydro-2-(methylsulfonyl)-5H-pyrrolo(1,2-a)imidazole