Table 3. Selected apparent second order rate constants for reaction of some biological oxidants with the free amino acid methionine.

Data from [7,28].

Reactant	Apparent second order rate constant (M−1·s−1)
HO•	7×109
CO3−•	1.2×108
HOCl	3.8×107
Singlet oxygen (1O2)	2×107
Ozone (O3)	5×106
CF3CHClOO•	1.4×106
N3•	<106
ONOO−/ONOOH	3.6×102
O2−•	<0.3
H2O2	2×10−2
NO•	Very slow