CAS No. 69-53-4
Chemical Structure
Check the
Ampicillin
product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.
Chemical Information
| IUPAC Name | (2S,5R,6R)-6-[[(2R)-2-amino-2-phenylacetyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid | |
|---|---|---|
| CAS Number | 69-53-4 | |
| Molecular Formula |
C16H19N3O4S |
|
| Molecular Weight (MW) | 349.41 | |
| InChIKey | AVKUERGKIZMTKX-NJBDSQKTSA-N |
Biological Activity
Ampicillin is a broad-spectrum beta-lactam antibiotic that targets penicillin-binding proteins to inhibit bacterial cell wall peptidoglycan synthesis. By acylating transpeptidases, ampicillin prevents cell wall cross-linking, which disrupts cell wall integrity and leads to osmotic lysis and bacterial death. It displays potent antibacterial activity against a wide range of Gram-positive and Gram-negative bacteria, including Staphylococcus aureus, Escherichia coli, Haemophilus influenzae, and Streptococcus pneumoniae.
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Note: Technical data last updated: Sep 1, 2026.