The Hive => Newbee Forum => Topic started by: between_the_eyes on May 04, 2004, 06:07:00 PM
Title: corvalolum -> phenobarbital(extraction)
Post by: between_the_eyes on May 04, 2004, 06:07:00 PM
What is the best way to extract and purify phenobarbital from corvalolum. corvalolum is a mixture containig: ethyl ester of a-bromo-iso-valeric acid - 2 g phenobarbital - 2 g peppermint oil -2 g NaOH -3 g ethyl alcohol - 50-60 ml water - 40 ml