Figure 3
From: Cross Reactive Material 197 glycoconjugate vaccines contain privileged conjugation sites
MS spectra of the doubly charged precursor ions m/z = 787.90 and m/z = 780.92 as well as their respective CID MS/MS spectra.
Using CID fragmentation even minor amounts of synthesis byproducts containing glucose instead of a glucuronic acid at the second position could be identified after being conjugated to CRM197.
