title: Structure and tautomerism of the neutral and monoanionic forms of 4-thiouracil derivatives.
mesh_terms: D006863:Hydrogen-Ion Concentration; D007536:Isomerism; D012997:Solvents; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013889:Thiouracil / Q000031:analogs & derivatives* / Q000032:analysis
chemical_list: D012997:Solvents; D013889:Thiouracil