Synonyms: (2s,5r,6r)-6-{[amino(phenyl)acetyl]amino}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid- 4,4'-methanediylbis(3-hydroxynaphthalene-2-carboxylic acid)(2:1);AC1Q5QWJ;AC1L4P0R;Ampicillin embonate (2:1);KST-1A1286;AR-1A3577;(2S,5R,6R)-6-[(2-amino-2-phenylacetyl)amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid; 4-[(3-carboxy-2-hydroxynaphthalen-1-yl)methyl]-3-hydroxynaphthalene-2-carboxylic acid;2-Naphthalenecarboxylic acid, 4,4'-methylenebis(3-hydroxy-, compd. with (2S-(2alpha,5alpha,6beta(S*)))-6-((aminophenylacetyl)amino)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo(3.2.0)heptane-2-carboxylic acid (1:2)