The molecule is penicillanic acid carrying a (p-hydroxybenzylidene)amino substituent at the 6beta position. It has been used as a hapten in the production of a generic monoclonal antibody for determining penicillin residues in milk. It has a role as a hapten.
(2S,5R,6R)-6-[(4-hydroxyphenyl)methylideneamino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid