Metabolite Profiling of Meridianin C In Vivo of Rat by UHPLC/Q-TOF MS

Table 1

Empirical formula, observed and calculated mass, and mass errors of the principal fragment ions observed in the product ion mass spectrum of [MC + H]⁺.

No.	Predicted formula^a	Calculated mass (Da)	Observed mass (Da)	Error (mDa)
1	C12H9N4Br^+	289.0089	289.0131	−4.2
2	C12H10N4^+	210.0905	210.0952	−4.7
3	C12H7N3^+	193.0640	193.0684	−4.4
4	C12H9N2^+	169.0766	169.0819	−5.3
5	C10H9N^+	140.0500	140.0550	−5.0

^aThe predicted formula was regardless of the ions.