K e = 0.00083 × C r C l + 0.0044 = {\displaystyle K_{e}=0.00083\times \mathrm {CrCl} \;\;\;\;\;+0.0044=}
t 1 / 2 = ln ( 2 ) / K e = {\displaystyle t_{1/2}=\ln(2)/K_{e}\;\;\;\;\;\;\;\;=}