The tripeptide Leu-Asp-Val (LDV) is known to bind α4β1 integrin in leukemia cells. Here we have synthesized a LDV peptidomimetic equipped with a biotin-conjugated spacer-arm. Compound 9 acts as an inhibitor of the α4β1 integrin in an adhesion assay using fluorescently labeled, α4β1 integrin-expressing leukemia CCRF-CEM cells. Furthermore, when bound to neutravidin-coated plates, compound 9 could capture CCRF-CEM cells. ...