Pyrimidine289-95-2100 % similar Pyridine110-86-146 % similar 1,3,5-Triazine290-87-945 % similar Pyridinium hydrobromide18820-82-138 % similar Hydrofluoric acid pyridine complex32001-55-138 % similar Poly(pyridine fluoride)62778-11-438 % similar Pyridinium chloride628-13-738 % similar Pyrazine290-37-933 % similar Sulfur trioxide pyridine complex26412-87-332 % similar 2,2'-Bipyrimidine34671-83-531 % similar