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UPLC-ESI-MS/MS chromatogram of TA in plasma. (A) Chromatogram of the blank plasma sample. (B) Chromatogram of blank plasma spiked with TA (10 ng/mL) and I.S. CA (50 ng/mL). (C) Chromatogram of the plasma sample obtained from subject 7 after intramuscular injection of 80 mg reference formulation at 504.0 h.
