Fenhexamid-5-hexenoic acidis a hapten that can be coupled with fenhexamid[1].
References
[1] Esteve-Turrillas FA , et al . Rationally designed haptens for highly sensitive monoclonal antibody-based immunoanalysis of fenhexamid. Analyst. 2018;143(17):4057-4066. DOI:10.1039/c8an00827b