“…However, all β-agonists have been banned for animal products in the European Union (EU) and China. Ractopamine, clenbuterol, salbutamol, zilpaterol, cimaterol, terbutaline, and tulobuterol were officially banned and are most often found being illegally used in China. , For purpose of investigating the impact of hapten structure on the antibody specificity, 54 compounds were used for the evaluation of cross-reactivity. These compounds included the most common β-agonists and their analogues, e.g., clenbuterol, ractopamine, zilpaterol, clenhexerol, and 3-dehydroxy salbutamol.…”