Norepinephrine: optical isomerism?

Richard Norman rsnorman at
Fri Oct 10 18:49:47 EST 1997

In article <876473336.17078 at>, lrobinso at says...
>Can anyone tell me if they're aware of any research that is being
>or has been done on optical isomerism in norepinephrine?  Like many
>complex biological molecules, norepinephrine has "right-" and
>"left-handed" forms. Are both neuroactive?

The Merck Index clearly identifies only the l form as being active.
Also the Sigma catalog is very clear (at least for epinephrine) in
identifying the l form as the one you probably want to buy, even
though they stock both.

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