title: Restricted rotation of the amino group in cytosine and 5-alkylcytosine derivatives caused by TFA complexation.
mesh_terms: D003596:Cytosine / Q000031:analogs & derivatives*; D004121:Dimethyl Sulfoxide; D005463:Fluoroacetates; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D014269:Trifluoroacetic Acid
chemical_list: D005463:Fluoroacetates; D003596:Cytosine; D014269:Trifluoroacetic Acid; D004121:Dimethyl Sulfoxide