... TABLE 1. CARBON-13 CHEMICAL SHiFfS AND AsSIGNMENTS FOR COMPOUND 1, 2, 3, 4, 5 AND 6 ... HzO, 275 (3), 272 (2), 203 (8), 201 (29), 177 (54), 149 (22), 137 (36), 121 (46), 109 (72 ... Each inhibitor was used in the concentration of 1 or 10 mM except p-CMB (0.01 mM). ...