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The CMC chromatograms and structures of nine APDs. (A) The CMC chromatograms of nine drugs on the ACE2-CMC column and ACE2-CMC column 10 mm × 2.0 mm; flow rate 0.2 mL/min; column temperature 37 °C; mobile phase 10 mM phosphate-buffer saline; pH 7.4; detection wavelength 254 nm. (B) The structures of the nine compounds.
