... Nhu vay, manh nay ed hai hgp phin fuc(SO,H)2 va fue(SO,H) va chiing lien ke't true tie'p vdi nhau. Nhu vay fucoidan F-20 ed dac diim cd dudng fucose chila hai nhdm sunfat gin vdi ... Manh nay duge tao thanh til khi hai manh ion m/z 732 lien kit vdi nhau tai hex ciia dau mach va hex-hex cua cud'i mach, vi mat di mdt dan vi fuc va hai dudng uro. fuc I hex-fuc2(S03H)-fuc(S03H)-hex-hex-hex-fuc2(SO,H)-fuc(SO,H)-hex-hex ... 413, 376, 340. Cac manh ion ldn 874, 732, 302 590, 448 dugc chgn de tie'p tuc ban phi lin hai, lan 3 thanh cac manh con, manh chiu tuang iing (MS', MS'). TCf tfn hieu pho...