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Toxicon. 2008 Mar 15;51(4):717-9. doi: 10.1016/j.toxicon.2007.11.007. Epub 2007 Nov 22.

New values of molecular extinction coefficient and specific rotation for cyanobacterial toxin cylindrospermopsin.

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1
National Institute for Environmental Studies, Onogawa 16-2, Tsukuba, Ibaraki 305-8506, Japan.

Abstract

The molecular extinction coefficient epsilon of cylindrospermopsin (CYN) purified by the anion exchange and the normal-phase HPLC procedures was determined to be 9800 at 262 nm. This epsilon is significantly higher than those (epsilon, 5800-6250) reported previously. In order to determine CYN concentrations in solutions using UV absorption, the epsilon-value of CYN should be corrected from 5800 to 9800. Further, the [alpha](D) value of CYN should be corrected from +12.5 degrees to +17.0 degrees .

PMID:
18187178
DOI:
10.1016/j.toxicon.2007.11.007
[Indexed for MEDLINE]
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