Not sure your purpose of separation and RP-HPLC was chosen. If it's for quantitation, other techniques may work, IEF, CIEF iCIEF I assume SEC-HPLC can not separate these two mAbs
d*e
20 楼
my suggestion: CN or C4 column column temperature >60C Reduce mAb if possible or Collect peaks from HIC column or SEC, if just need desalt mAb for MS
d*e
21 楼
general rule: bigger protein need short stationary phase chain to reduce interaction and improve peak shape/recovery.The problem here is too much absorbance on stationary phase
Adsorption on the stationary phase might be a very good reason. Used to work with Non-porous silica reversed phase HPLC (Beckman ProteomeLab PF2D). This reverse phase column gives very good peak shapes for proteins.And fractions can be collected for downstream analysis