抄録
Improved Wilzbach tritiations and tritiations with tritiated water are compared with results obtained by direct syntheses of tritiated compounds. The syntheses of [6-3H]-4-hydroxypyrazolo[3, 4-d]pyrimidine, [1-3H]-2-amino-1-phenylpropanol and [2, 3-3H]-tributyltin benzoate are described.