Table 2 K _i of GLO with oxalate

4.572 ± 0.930^c

1.887 ± 0.326^c

5.604 ± 1.229^b

3.018 ± 1.359^a

6.337 ± 1.736^a

2.272 ± 0.524^b

5.491 ± 1.041^b

2.316 ± 0.608^b