Table 2. Absolute and apparent (at pH 7.4) rate constants for the reaction of HOCl and ClO^– with various sulfur-containing molecules (X).

X	k(X + HOCl)/108 M–1 s–1	k(X + ClO–)/103 M–1 s–1	k app at pH 7.4/108 M–1 s–1
Zn·LHSP a	9.3 ± 0.8	12 ± 2	5.6 ± 0.5
Cysteine b	—	—	3.6 ± 0.5
N-Acetylcysteine b	—	—	0.29 ± 0.04
Glutathione b	—	—	1.2 ± 0.2
Methionine a	5.5 ± 0.8	0.7 ± 0.2	3.2 ± 0.3
N-Acetylmethionine b	—	—	1.7 ± 0.2

^aThis work, measured at 298 K.

^b Ref. 9, measured 295 K.