Figure 5.
Evidence that light chain dissociates in MS source for AbbVie model ADC. (a) Full-range raw mass spectra show large signals for light chain+drug, but no significant signals for ADC minus light chain+drug. (b) Chromatogram with UV detection (top) and EIC based on light chain+drug (bottom). The blue arrows point to two peaks that changed intensities, and the inset depicts the structures for the isomers consistent with these intensity changes.