<http://schema.org/item>
<http://chemwiki.ucdavis.edu/Organic_Chemistry/Organic_Chemistry_With_a_Biological_Emphasis>
<http://chemwiki.ucdavis.edu/Organic_Chemistry/Organic_Chemistry_With_a_Biological_Emphasis/Chapter_14%3A_Reactions_with_stabilized_carbanion_intermediates%2C_part_II/Section_14.5%3A_Thiamine_diphosphate-dependent_reactions>