Table 1.

Radiochemical purity (RCP) values as mean ± SD of ²¹²Pb-labelled NG001 (33 µg/ml) after radiolabelling in the ²²⁴Ra-solutions of different pH values at 37 ºC or at different incubation temperatures (pH=5-6). N, the number of independent experiments.

Incubation Conditions	RCP (%)	N
pH
4	94.59±0.89	2
5-6	94.04±0.87	7
8	88.25±0.82	2
Temperature (°C)
4	93.81±0.40	2
20	94.86±0.43	2
37	94.04±0.87	7