Posted by stjames on December 18, 2001, at 18:44:18
In reply to escitaloproam, posted by geno on December 18, 2001, at 17:40:21
Certain chemicals in nature exist in two mirror-image forms, or
isomers,
which can be called right- and left-handed. Citalopram is a mixture of
two mirror-image structures, an S- and R-isomer. The left-handed form,
or S-isomer, is the active isomer in terms of its contribution to
citalopram's antidepressant effects, while the R-isomer does not
contribute to its antidepressant activity.
The so called "least patentable difference". I would not hold my breath !
poster:stjames
thread:87325
URL: http://www.dr-bob.org/babble/20011213/msgs/87331.html