<span class="separated-list-container"><span class="separated-list col-lg-12 col-xl-6"><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Compounds containing a pyridine ring, which is a six-member aromatic heterocycle which consists of one nitrogen atom and five carbon atoms." href="http://classyfire.wishartlab.com/tax_nodes/C0000089" rel="noopener" target="_blank">Pyridines and derivatives</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Organic compounds containing phosphonic acid." href="http://classyfire.wishartlab.com/tax_nodes/C0001302" rel="noopener" target="_blank">Organic phosphonic acids</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Compounds containing an aromatic ring where a carbon atom is linked to an hetero atom." href="http://classyfire.wishartlab.com/tax_nodes/C0004144" rel="noopener" target="_blank">Heteroaromatic compounds</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Organic compounds containing an heterocycle with at least one nitrogen atom and one carbon atom linked to each other." href="http://classyfire.wishartlab.com/tax_nodes/C0004139" rel="noopener" target="_blank">Azacyclic compounds</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Compounds containing a bond between carbon a pnictogen atom. Pnictogens are p-block element atoms that are in the group 15 of the periodic table." href="http://classyfire.wishartlab.com/tax_nodes/C0004557" rel="noopener" target="_blank">Organopnictogen compounds</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Organic compounds containing the phosphorus atom." href="http://classyfire.wishartlab.com/tax_nodes/C0000400" rel="noopener" target="_blank">Organophosphorus compounds</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Organic compounds containing a bond between a carbon atom and an oxygen atom." href="http://classyfire.wishartlab.com/tax_nodes/C0000323" rel="noopener" target="_blank">Organooxygen compounds</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Organic compounds containing a nitrogen atom." href="http://classyfire.wishartlab.com/tax_nodes/C0000278" rel="noopener" target="_blank">Organonitrogen compounds</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Organic compounds containing an oxide group." href="http://classyfire.wishartlab.com/tax_nodes/C0003940" rel="noopener" target="_blank">Organic oxides</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Derivatives of hydrocarbons obtained by substituting one or more carbon atoms by an heteroatom. They contain at least one carbon atom and heteroatom." href="http://classyfire.wishartlab.com/tax_nodes/C0004150" rel="noopener" target="_blank">Hydrocarbon derivatives</a></span></span></span>