penicillin 6beta-({5-[(p-aminophenyl)imino]pentylidene}amino)penicillanic acid (2S,5R,6R)-6-({5-[(4-aminophenyl)imino]pentylidene}amino)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 388.157 388.48400 6-[(p-hydroxybenzylidene)amino]penicillanic acid 6beta-({5-[(4-aminophenyl)imino]pentylidene}amino)-2,2-dimethylpenam-3alpha-carboxylic acid BHEVULAQHTXCQV-HLLBOEOZSA-N C19H24N4O3S CHEBI:73188 InChI=1S/C19H24N4O3S/c1-19(2)15(18(25)26)23-16(24)14(17(23)27-19)22-11-5-3-4-10-21-13-8-6-12(20)7-9-13/h6-11,14-15,17H,3-5,20H2,1-2H3,(H,25,26)/t14-,15+,17-/m1/s1 PMID:23452214 Penicillanic acid carrying a (p-aminophenyl)imino]pentylidene}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. [H]C(CCCC([H])=Nc1ccc(N)cc1)=N[C@@H]1C(=O)N2[C@@H](C(O)=O)C(C)(C)S[C@]12[H] chebi_ontology hapten 1 PAPA hapten PAPA