Table 3. Equilibrium Binding Constants for Methylamino Analogues.

ID	R	SPR KD [μM]
13	3′-CH2NMe2	4.52 ± 1.36
15a	2′-CH2NH2	1.87 ± 0.32
15b	3′-CH2NH2	2.44 ± 0.71
1	4′-CH2NH2	1.32 ± 0.08
18a	2′,3′-(CH2NHCH2)	2.47 ± 0.25
18b	3′,4′-(CH2NHCH2)	2.17 ± 0.32