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(Top) The 1-h NMR spectrum of LC fraction recovering 300 ng of taxol spiked into cyanobacterial extract shown in Figure 5 (5.9-min peak) (water, 3.3 ppm, suppressed by presaturation and solvent subtraction). (Bottom) The reference 1H NMR spectrum, of 700 μL of 1 mg/mL taxol in DMSO-d6 acquired using an inverse probe, 16 transients.
