Lewis X抗原四糖-N-乙酰基-间隔1-胺, Lewis X tetraose-Nacetyl-spacer1-NH2, Galβ1-4(Fucα1-3)GlcNAcβ1-3Galβ-NAc-sp1-NH2。货号:GLY050-Nac-sp1-NH2