anastaf archisulfa avissul chemiopen demosulfan durisan saft ipersulfidin sirup isosulfamerazine methylsulfadiazin methylsulfadiazine novosul nsulfanilamide orosulfan pallidin retardon risulfasens sulfaperin sulfaperina sulfaperine sulfaperinum sulfatreis sulfopirimidine sulpenta ultrasulfon sirup