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Strychnine (Is for NMR lovers)

Category: Poisons
Posted on: September 13, 2007 8:06 PM, by Molecule of the Day

Strychnine is a well-known poison and detective novel trope with a moderately low LD50 (ca 10mg). You find it more often in NMRs these days.

# InChI=1/C21H22N2O2/c24-18-10-16-19-13-9-17-21(6-7-22(17)11-12(13)5-8-25-16)14-3-1-2-4-15(14)23(18)20(19)21/h1-5,13,16-17,19-20H,6-11H2<br />


NMR jocks love strychnine for some reason. It is a pretty good example of a molecule with a hard-to-solve structure that NMR quickly dispatches - see this PDF for some background. I don't get why it always seems to be around in NMR rooms, though - there's the rack of about 40 standards and forgotten samples (who is leaving all these tubes behind?), one of which contains enough strychnine for a decade of Agatha Christie novels - these are those concentrated 2D samples. I guess they use them for training?


Interestingly, tannic acid apparently complexes strychnine, forming a precipitate, and it was once used as an antidote (presumably only in the case of recent ingestion).

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Comments

10 mg? I'm impressed. I think NaCN is less toxic than that.

Posted by: Tom B | September 20, 2007 9:03 AM

It's interesting that you say NMR jocks are keen on strychnine...when I was chemistry student, way back when, strychnine was one of the first structures I built when I got a plastic ball and stick modelling kit. Don't recall ever doing the NMR spectra on it though.
db

Posted by: David Bradley | September 28, 2007 11:11 AM

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