| abstract |
A compound useful for forming immunoconjugates used in the detection of organophosphate pesticides is provided. The compound has the formula ##STR1## wherein X is selected from the group consisting of R--O--, R--S-- and R--NH--, where R is an optionally substituted aromatic or heterocyclic group, or an optionally substituted alkyl or alkenyl group; n Y is O or S; n R 1 is H or alkyl; and n R 2 is a group of the formula --(CH 2 ) n -- wherein n is an integer of from 1 to 10, or branched chain alkylene, or a group of the formula R 3 --O--R 4 wherein R 3 and R 4 are both or straight or branched chain alkylene; n or a salt or ester thereof. |