TABLE 1.

KIE values (k_H/k_D) for aerial oxidation and oxidation by superoxide radicals for deuterated radical oxidant probes.

Probe	Product	kH/kD
		Aerial oxidation[a]	Oxidation by (O2·−)[b]
		4.7	2.5
		3.7	2.6
		4.1	2.7
		4.7	2.8
		2.1	1.7

^[a]Measured by using a 60 μm concentration of 1–10 in PBS at 25 °C (see the Supporting Information).

^[b]k_H and k_D were determined following the method described by Finkelstein et al.[12] (see the Supporting Information). Cy=cyanine dye, DHE=dihydroethidium, DDE=dideuteroethidium, DHR=dihydrorhodamine, DDR=dideuterorhodamine.