Identification of metabolites of Reduning injection in rat plasma, bile, urine and feces after intravenous administration

This study was designed to determine the metabolites of Renduining injection in rats. The ultra-high performance liquid chromatography-LTQ Orbitrap mass spectrometric (UHPLC-LTQ-Orbitrap-MS) and mass defect filter techniques were applied to analyze the metabolites of Reduning injection in rat plasma, bile, urine and feces. As a result, we determined 14 metabolites of geniposide, including oxidation, dehydration, hydroxymethylene loss, hydrolysis, ring-opened, cysteine conjugation and glucuronidation conjugation of aglycone; 9 metabolites of geniposidic acid, consisting of dehydration, ring-opened, double-bond reduction and cysteine conjugation; 6 metabolites of secoxylogain including hydrolysis, hydroxymethylene loss, hydroxylation and ethylation; 12 metabolites of chlorogenic acid, containing decarboxylation, hydrolysis, methylation, acetylation, cysteinylglycine conjugation and glutathione conjugation. It provided information for the therapeutic effect of Reduning in vivo.