Reduction Potentials

2,5-Diaziridinyl-3,6-bis(carbethoxyamino)-1,4-benzoquinone
(AZQ)

(R² = R⁵ = NHCO₂Et)

Svingen, B.A.; Powis, G.
Arch. Biochem. Biophys. 209(1): 119-26 (1981)

E = –168(mV), ionic strength = ~0.010, pH = 7
Questionable or superseded value.

Reference compound: DQ
Reference E: –244 mV
Co-solute: t-BuOH

Kinetics used to estimate equilibrium constant.

Butler, J.; Hoey, B.M.; Lea, J.S.
Biochim. Biophys. Acta 925(2): 144-9 (1987)

E = –65(mV), ionic strength = 0.12, pH = 7

Reference compound: 1.2.5
Reference E: –110 mV
Co-solute: HCO₂^–

Concentrations used to estimate equilibrium constant.

Butler, J.; Hoey, B.M.; Lea, J.S.
Biochim. Biophys. Acta 925(2): 144-9 (1987)

E = –70(mV), ionic strength = 0.12, pH = 7

Reference compound: 1.1.4
Reference E: –66 mV
Co-solute: HCO₂^–

Concentrations used to estimate equilibrium constant.

Butler, J.; Hoey, B.M.; Lea, J.S.
Biochim. Biophys. Acta 925(2): 144-9 (1987)

E = –73(mV), ionic strength = 0.12, pH = 7

Reference compound: O₂; (1 mol dm^–3)
Reference E: –155 mV
Co-solute: HCO₂^–

Kinetics used to estimate equilibrium constant.