title: Labelling of some biochemically important thiopyrimidines and thiosemicarbazones by an exchange reaction with elementary sulphur-35S.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D011743:Pyrimidines; D013455:Sulfur; D013460:Sulfur Isotopes; D013882:Thiosemicarbazones
chemical_list: D011743:Pyrimidines; D013460:Sulfur Isotopes; D013882:Thiosemicarbazones; D013455:Sulfur