Table 3.

Rate Constants and Half Lives for BQ and BQD on pH 7.4 and 5.5.

Chemical	ka(s−1)	ks(s−1)	t½(s)	ki(s−1)
BQ (pH 7.4)	1.66 × 103	1.50 × 103	4.44 × 10−4	1.06 × 10−2
BQ (pH 5.5)	2.61 × 104	2.26 × 104	3.07 × 10−5	6.94 × 10−1
(EDG) pH 7.4
MBQ	3.87 × 102	3.23 × 102	2.14 × 10−3	5.74 × 10−3
tBBQ	2.39 × 101	2.31 × 101	3.00 × 10−2	8.06 × 10−4
DMBQ	7.47 × 10−1	7.27 × 10−1	9.54 × 10−1	2.93 × 10−4
(EWG) pH 7.4
CBQ	2.18 × 105	2.62 × 105	2.64 × 10−6	3.78 ×10−1
2,6-DCBQ	1.60 × 106	1.21 × 106	5.74 × 10−7	2.98
2,5-DCBQ	2.92 × 106	2.83 × 106	2.45 × 10−7	2.99 × 10−1
(EDG) pH 5.5
MBQ	1.51 × 103	1.60 × 103	4.34 × 10−4	1.71 × 10−3
tBBQ	3.60 × 102	3.37 × 102	2.06 × 10−3	3.33 × 10−2
DMBQ	1.05 × 101	1.25 × 101	5.56 × 10−2	1.48 × 10−3