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BACAMPICILLIN

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BACAMPICILLIN Basic information

Product Name:
BACAMPICILLIN
Synonyms:
  • BACAMPICILLIN
  • BACAMPICILLIN HCL USP(CRM STANDARD)
  • 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 6-[(aminophenylacetyl)amino]-3,3-dimethyl-7-oxo-, 1-[(ethoxycarbonyl)oxy]ethyl ester, [2S-[2α,5α,6β(S*)]]-
  • 4-Thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid, 6-[[(2R)-aminophenylacetyl]amino]-3,3-dimethyl-7-oxo-, 1-[(ethoxycarbonyl)oxy]ethyl ester, (2S,5R,6R)-
  • Carampicillin
  • (2S,5R,6R)-6-[[(2R)-2-amino-1-oxo-2-phenylethyl]amino]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 1-ethoxycarbonyloxyethyl ester
  • Bacampicillin (base and/or unspecified salts)
  • (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 1-(ethoxycarbonyloxy)ethyl ester
CAS:
50972-17-3
MF:
C21H27N3O7S
MW:
465.52
Mol File:
50972-17-3.mol
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BACAMPICILLIN Chemical Properties

Boiling point:
678.4±55.0 °C(Predicted)
Density 
1.37±0.1 g/cm3(Predicted)
storage temp. 
Store at -20°C
solubility 
Soluble in DMSO
pka
pKa 6.8 (Uncertain)
CAS DataBase Reference
50972-17-3
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BACAMPICILLIN Usage And Synthesis

Originator

Penglobe,Astra,W. Germany,1977

Definition

ChEBI: A penicillanic acid ester that is the 1-ethoxycarbonyloxyethyl ester of ampicillin. It is a semi-synthetic, microbiologically inactive prodrug of ampicillin.

Manufacturing Process

1'-Ethoxycarbonyloxyethyl 6-(D-α-azidophenylacetamido)penicillinate (98 g) was prepared from sodium 6-(D-α-azidophenylacetamido)penicillinate (397 g, 1 mol), α-chlorodiethylcarbonate (458 g, 3 mols) and sodium bicarbonate (504 g, 6 mols). The product showed strong IR absorption at 2090 cm-1 and 1780-1750 cm-1 showing the presence of azido group and β-lactam and ester carbonyls.
It was dissolved in ethyl acetate (700 ml) and hydrogenated at ambient conditions over a palladium (5%)on carbon catalyst (18 g). The catalyst was removed by filtration and washed with ethyl acetate. The combined filtrates were extracted with water at pH 2.5 by addition of dilute hydrochloric acid. Lyophilization of the aqueous phase gave the hydrochloride of 1'- ethoxycarbonyloxyethyl 6-(D-α-aminophenylacetarnido)penicillinate (94 g), MP 171°-176°C.

Therapeutic Function

Antibacterial

Metabolism

Although comparatively well absorbed (30–55%), the oral efficacy of ampicillin for systemic infections can be enhanced significantly through the preparation of pro-drugs. In contrast to ampicillin itself, which is amphoteric, bacampicillin is a weak base and is very well absorbed in the duodenum (80–98%). Enzymatic ester hydrolysis in the gut wall liberates carbon dioxide and ethanol, followed by spontaneous loss of acetaldehyde and production of ampicillin. The acetaldehyde is metabolized oxidatively by alcohol dehydrogenase to produce acetic acid, which joins the normal metabolic pool.

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