| Name | Lewis X tetraose [Gal-(Fuc)-GlcNAc-Gal] | |
| Sequence | Gal b1-4 (Fuc a1-3) GlcNAc b1-3 Gal b | |


| Molecular Weight | 691.636 | |
| Category | Lewis antigens | |
| Glycosidic linkages | a1-3 b1-3 b1-4 null | |
| Glycan composition | Gal : 2 Fuc : 1 GlcNAc : 1 | |
| Comment | present in Oligosaccharides-Lectin complexes such as 1SL5 | |