Choline and acetylcholine were analyzed using IC YS-50, a cation analysis column, under cation exchange mode. If high sensitive analysis is required, LC/MS/MS analysis using HILICpak VC-50 2D, a polymer-based HILIC mode column, is recommended. When VC-50 2D is used, the elution order of a sample is reversed when compared to HILIC mode.
Refer to:Â LC/MS Analysis of Choline and Acetylcholine (VC-50 2D)
Sample : 10µg/mL each (in H2O), 20µL
1. Choline
2. Acetylcholine
Column : Shodex IC YS-50 (4.6mmI.D. x 125mm) Eluent : 10mM H3PO4 aq. Flow rate : 1.0mL/min Detector : Non-suppressed conductivity, UV(210nm) Column temp. : 40°C