Galectin-4-IN-2 (compound 12) is an inhibitor of galectin 4C with a galectin dissociation constant of 1.6 mM[1].
References
[1] Christopher T Oberg, et al. Protein subtype-targeting through ligand epimerization: talose-selectivity of galectin-4 and galectin-8. Bioorg Med Chem Lett. 2008, 18, 13. DOI:10.1016/j.bmcl.2008.05.066