= Vladimir Prelog
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<Vladimir Prelog> helped formulate the <Cahn-Ingold-Prelog priority rules> for specifying molecular <chirality>. Ranking the groups attached to a <stereogenic centre> makes it possible to assign a reproducible stereochemical descriptor. A descriptor records configuration through a stated convention, rather than the sign of a sample's measured <optical rotation>.<Specification of Molecular Chirality by Robert Sidney Cahn and others>[Cahn, Ingold and Prelog, Specification of Molecular Chirality, 1966]{ref}
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{title=Portrait of <Vladimir Prelog>}
{description=ETH Zürich / ETH-Bibliothek Zürich, Bildarchiv; cropped by Sebastian Wallroth. https://creativecommons.org/licenses/by-sa/3.0/[CC BY-SA 3.0], via Wikimedia Commons.}
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