VETRANAL ™ , analytical standard Synonym(s): (2 S ,5 R ,6 R )-6-{[(2-Ethoxy-1-naphthalenyl)carbonyl]amino}-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid sodium salt; 6-(2-Ethoxy-1-naphthamido)penicillin sodium salt Empirical Formula:...