| abstract |
A method for preparing a hapten of formula I Hapten I suitable for use in the production of an antibody capable of binding to at least one structural epitope of a phenetanolamine such as, but not limited to, ractopamine, isoxsuprine or ritodrine, the method comprising the step of reacting a phenethanolamine derivative of the formula D, wherein Z1 is a crosslinker, with a phenylalkylcarbonyl derivative of the formula E, wherein Z2 is H; Y is independently H or CH3; W is independently H or CH3; n is independently 1 or 2; and m is independently 0 or 1 |