Its sodium-ammonium salt is unusual among racemic mixtures in that during crystallization it can separate out into two kinds of crystals, each composed of one isomer, and whose macroscopic shapes are mirror images of each other. Louis Pasteur was thus able to separate the two enantiomers by picking apart the crystals.
In a modern-time re-enactment of the Pasteur experiment it was established that the preparation of crystals was not very reproducible, the crystals deformed but that the crystals were large enough to inspect with the naked eye (microscope not required).
Chance and the prepared mind. (Louis Pasteur's discovery of mirror-image isomerism in salts of racemic acid)
May 04, 1998; 'In the fields of observation, chance favours only those minds that have been prepared.' This was the frequently quoted maxim of...
Wipo Publishes Patent of Daedong Korea Ginseng, Sung Keun Choi, Seong Il Kim and No Young Park for "Production Method for a Red Ginseng Liquid Concentrate Having Boosted Levels of Ginsenoside Rg3 and Rh2" (South Korean Inventors)
Jan 28, 2013; GENEVA, Jan. 28 -- Publication No. WO/2013/012180 was published on Jan. 24.Title of the invention: "PRODUCTION METHOD FOR A RED...