Molecular Formula: C16H19N3O4S,3H2O Molecular Weight: 403.5 CAS No.: 7177-48-2 Ampicillin Trihydrate CAS 7717-48-2 is a β-lactam antibiotic that can treat a variety of bacterial infections and is one of the essential drugs in the basic public health system. Description Ampicillin trihydrate is wh…