4,6-Dimethoxy-2-methylthiopyrimidine90905-46-732 % similar 6-(Methylthio)-1H-pyrazolo[3,4]pyrimidine55084-74-731 % similar 5-Bromo-4-chloro-2-methylsulfanyl-pyrimidine63810-78-631 % similar 2-Chloro-4-methylsulfanyl-pyrimidine49844-93-131 % similar