Table 3.

Analyte-specific parameters

Variable	Remdesivir	GS-441524	QX (IS)
Quantification trace (m/z)	603.15>200	292>163	313.20>78.05
collision energy (V)	−53	−32	−50
entrance voltage (V)	15	43	30
collision cell lens 2 (V)	−116	−64	−80
Secondary ion trace (m/z)	603.15>318	292>147	313.20>246.15
collision energy (V)	−28	−50	−50
entrance voltage (V)	12	2	30
collision cell lens 2 (V)	−104	−80	−80
Ionization	ESI+	ESI+	ESI+