Ampicillin

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(CC) Image: David E. Volk
ampicillin
IUPAC name: see chemistry section
Synonyms: aminobenzylpenicillin
Formula: C16H19N3O4S

 Uses: antibiotic drug

 Properties: beta-lactam

 Hazards: see drug interactions

Mass (g/mol): CAS #:
349.4048 69-53-4



Ampicillin, or aminobenzylpenicillin, is a broad spectrum antibiotic and a derivative of penicillin. It is used to treat infections of E. coli, P. mirabilis, enterococci, Shigella, S. typhosa and other Salmonella, nonpenicillinase-producing N. gononhoeae, H. influenzae, staphylococci, and streptococci including streptoc. It is also widely used in molecular biology labs during the over-expression of proteins in bacterial cells that are tolerant of ampicillin. This ensures that only the bacteria of interest grow in the media and produce the protein of interest.

Ampicillin is a penicillin beta-lactam antibiotic used to eliminate susceptible, usually Gram-positive, organisms. Like penicillin, ampicillin inhibits the last stage of bacterial cell wall synthesis by binding to specific penicillin-binding proteins in the bacterial cell wall.

Its IUPAC chemical name is (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 and it has chemical formula C16H19N3O4S, giving it a molecular mass of 349.4048 g/mol.

Synonyms of ampicillin

  • Ampicilline
  • Ampicillinum
  • Ampicilline
  • Ampicillina
  • Ampicillin
  • Ampicillin Trihydrate
  • Ampicillin Sodium
  • Ampicillin Base

  • Ampicillin Anhydrous
  • Ampicillin Anhydrate
  • Ampicillin Acid
  • Ampicilina
  • Anhydrous Ampicillin
  • Bayer 5427
  • D-Ampicillin
  • Aminobenzylpenicillin

Brand names of ampicillin

  • AB-PC®
  • Ab-Pc Sol®
  • Acillin®
  • Adobacillin®
  • Alpen®
  • Amblosin®
  • Amcill®
  • Amfipen®
  • Amfipen V®
  • Amipenix S®
  • Ampen®
  • Ampi®
  • Ampi-Bol®
  • Ampi-Co®
  • Ampi-Tab®
  • Ampichel®
  • Ampicil®
  • Ampicillin A®
  • Ampicin®
  • Ampifarm®
  • Ampikel®
  • Ampimed®
  • Ampipenin®
  • Ampipenin, Nt3®
  • Ampiscel®
  • Ampisyn®
  • Ampivax®
  • Ampivet®
  • Amplacilina®

  • Amplin®
  • Amplipenyl®
  • Amplisom®
  • Amplital®
  • Ampy-Penyl®
  • Austrapen®
  • BRL®
  • Binotal®
  • Bonapicillin®
  • Britacil®
  • Campicillin®
  • Cimex®
  • Copharcilin®
  • D-Cillin®
  • Delcillin®
  • Deripen®
  • Divercillin®
  • Doktacillin®
  • Duphacillin®
  • Geocillin®
  • Grampenil®
  • Guicitrina®
  • Guicitrine®
  • Lifeampil®
  • Morepen®
  • Norobrittin®
  • Novo-Ampicillin®
  • Nuvapen®

  • Olin Kid®
  • Omnipen®
  • Omnipen-N®
  • Orbicilina®
  • Pen A®
  • Pen Ampil®
  • Pen a Oral®
  • Penbristol®
  • Penbritin®
  • Penbritin Paediatric®
  • Penbritin Syrup®
  • Penbritin-S®
  • Penbrock®
  • Penicline®
  • Penimic®
  • Pensyn®
  • Pentrex®
  • Pentrexl®
  • Pentrexyl®
  • Pfizerpen A®
  • Pfizerpen-A®
  • Polycillin®
  • Polycillin-N®
  • Ponecil®
  • Princillin®
  • Principen®
  • Principen '125'®
  • Principen '250'®


  • Principen '500'®
  • Qidamp®
  • Racenacillin®
  • Ro-Ampen®
  • Rosampline®
  • Roscillin®
  • Semicillin®
  • Semicillin R®
  • Servicillin®
  • Sk-Ampicillin®
  • Spectrobid®
  • Sumipanto®
  • Supen®
  • Synpenin®
  • Texcillin®
  • Tokiocillin®
  • Tolomol®
  • Totacillin®
  • Totacillin-N®
  • Totalciclina®
  • Totapen®
  • Trifacilina®
  • Ultrabion®
  • Ultrabron®
  • Vampen®
  • Viccillin®
  • Viccillin S®
  • Wypicil®

External links

The most up-to-date information about Ampicillin and other drugs can be found at the following sites.