EnglishEnglishEspañolPortuguêsFrançaisItalianoSvenskaDeutschHome pageQuestions and answersStatisticsDonationsContactOrganisms1ThalictrumChemicals and Drugs2IsoquinolinesSulfur OxidesPhenomena and Processes2CyclizationMolecular StructureFilter...OrganismsChemicals and DrugsPhenomena and ProcessesSelect a category...IsoquinolinesSulfur OxidesThalictrumCyclizationMolecular StructureIsoquinolinesA group of compounds with the heterocyclic ring structure of benzo(c)pyridine. The ring structure is characteristic of the group of opium alkaloids such as papaverine. (From Stedman, 25th ed)Sulfur OxidesInorganic oxides of sulfur.ThalictrumA plant genus of the family RANUNCULACEAE. Members contain isoquinoline alkaloids and triterpene glycosides.CyclizationChanging an open-chain hydrocarbon to a closed ring. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)Molecular StructureThe location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.