Acecainide ,ZYF Pharm Chemical
N-acetylprocainamide (NAPA) was used as a model drug in the study of establishing a quantitative approach to predict the renal clearances of basic drugs using N-1-methylnicotinamide (NMN).
ChEBI: A benzamide obtained via formal condensation of 4-acetamidobenzoic acid and 2-(diethylamino)ethylamine.
1.0 g of p-amino-N-(2-diethylaminoethyl)benzamide is dissolved in
chloroform. A few ice cubes are added to the solution. Acetyl chloride is added
dropwise with stirring until no more white precipitate forms; the latter is
separated by filtering under suction. The precipitate is washed with cold
acetone and dried overnight in a vacuum oven at room temperature. The
product is dissolved in a minimum amount of hot isopropanol and allowed to
precipitate in the cold. The p-acetamido-N-(2-diethylaminoethyl)benzamide
hydrochloride, is recrystallized a second time from hot isopropanol, melting
point 190°-193°C.
The free base is obtained from the hydrochloride by dissolving the latter in
water, adjusting the pH to greater than 10 with dilute sodium hydroxide, and
adding an equal volume of benzene. After shaking in a separatory funnel, the
benzene layer is recovered and evaporated to dryness. So the p-acetamido-N-
(2-diethylaminoethyl)benzamide is obtained.
The relaxant effects of N-acetylprocainamide on bovine tracheal smooth muscle was studied.
