lc product
1.The COs products were purified by charcoal adsorption and Bio-gel P4 chromatography, penta-N-acetylchitopentaose (m/z, 1034[M+H]+)and tetra-N-acetylchitopentaose (m/z, 831[M+H]+) were identified as the dominating COs product using the method of liquid chromatography-electrospray ionization mass spectrometry (LC-ESI-MS).
