Abstract
We in situ assessed the influence of natural fluoride concentrations in lotic freshwater ecosystems on diet and morphology of Boana cordobae tadpoles. Two streams were sampled in Argentina: Los Vallecitos stream (LF-LV) and Los Cerros Negros stream (HF-CN) with low and high fluoride levels, respectively. We captured tadpoles of B. cordobae in each stream using nets. Body weight (BW), total length (TL) and body condition (BC) of tadpoles was registered. Food items were identified to
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o
Fluorine is an indispensable tool in the medicinal chemists’ toolbox. Due to its small size and strong electron-withdrawing property, fluorine is widely used in medicinal chemistry to improve a molecule’s potency and permeability, modulate its pKa and lipophilicity, and control its conformation. Of the 38 small molecule drugs that were approved by the FDA in 2018, 18 contain fluorine. As the C–F bond-dissociation energy (BDE) is very high (typically 109 kcal/mol or above), fluorine is ofte
