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. Author manuscript; available in PMC: 2013 Mar 21.
Published in final edited form as: Bioconjug Chem. 2012 Mar 1;23(3):596–603. doi: 10.1021/bc200647q

Table 1.

19F NMR chemical shifts (ppm) of 12~17 and hydrolytic rates (μmol/min/unit) of 13~15 with β-gal.*

No. 12 13 14 15 16 17
δF (substrate) −54.84 −54.62 −54.60 −44.38 −45.02 −45.03
δF (aglycone) --- −62.27 −62.03 −49.61 --- ---
Δ δ F --- 7.65 7.43 5.23 --- ---
ν (μmol/min/unit) --- 3.91 1.67 0.55 --- ---
*

β-gal (E801A) at 37 °C in PBS (0.1M, pH=7.4).