128366-09-6 2-Methylmercapto-5,6-dihydro-7H-pyrrole(1,2-a)imidazole 5H-Pyrrolo(1,2-a)imidazole, 6,7-dihydro-2-(methylthio)- 6,7-Dihydro-2-(methylthio)-5H-pyrrolo(1,2-a)imidazole