4-Hydroxy-2-(methylthio)-7H-pyrrolo[2,3-d]pyrimidine

3-methylsulfanyl-2,4,9-triazabicyclo[4.3.0]nona-3,7,10-trien-5-one

3,7-Dihydro-2-(methylsulphanyl)-4H-pyrrolo[2,3-d]pyrimidin-4-one, 3,7-Dihydro-2-(methylmercapto)-4-oxo-4H-pyrrolo[2,3-d]pyrimidine