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PHENETHICILLIN POTASSIUM SALT

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PHENETHICILLIN POTASSIUM SALT Basic information
PHENETHICILLIN POTASSIUM SALT Chemical Properties
  • color dl-Form: Crystals from acetone
Safety Information
PHENETHICILLIN POTASSIUM SALT Usage And Synthesis
  • OriginatorSyncillin, Bristol, US ,1959
  • Manufacturing ProcessTriethylamine (1.5 ml) was added to a cold solution (10°C) of αphenoxypropionic acid (1.66 g, 0.01 mol) in 15 ml of pure dioxane, with stirring and cooling to 5°C to 10°C while isobutyl chloroformate (1.36 g, 0.01 mol) in 5 ml of dioxane was added dropwise. Then the mixture was stirred for ten minutes at 5°C to 8°C. A solution of 6-amino-penicillanic acid (2.16 g, 0.01 mol) in 15 ml of water and 2 ml of triethylamine was then added dropwise while the temperature was maintained below 10°C. The resulting mixture was stirred in the cold for 15 minutes then at room temperature for 30 minutes, diluted with 30 ml of cold water and extracted with ether which was discarded. The cold aqueous solution was then covered with 75 ml of ether and acidified to pH 2 with 5 N H2SO4. After shaking, the ether layer containing the product 6-(α-phenoxypropionamido)penicillanic acid, was dried for ten minutes over anhydrous sodium sulfate and filtered. Addition of 6 ml of dry n-butanol containing 0.373 g/ml of potassium 2-ethylhexanoate precipitated the potassium salt of the product as a colorless oil which crystallized on stirring and scratching and was collected, dried in vacuo and found to weigh 2.75 g, to melt at 217°C to 219°C.
  • brand nameChemipen (Bristol-Myers Squibb); Syncillin (Bristol-Myers Squibb) [Name previously used: Phenethicillin.].
  • Therapeutic Function Antibacterial
  • Safety ProfilePoison by intravenous route. Moderately toxic by intraperitoneal route. When heated to decomposition it emits toxic fumes of K2O, SOx, and NOx.
PHENETHICILLIN POTASSIUM SALT(132-93-4)Related Product Information
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