FGROUP by class
Carbon Carbon skeleton 1 carbon Ketimine N,N'-ketimine (F101811) N,O-ketimine (F101812) N,S-ketimine (F101813) Hydrocarbon ring N-heterocyclic O-heterocyclic S-heterocyclic Mixed-heterocyclic Oxygen Nitrogen Sulfur Phosphorus Halogen Boron Magnesium Silicon Iron Cobalt Asenic Selenium Tin