<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="3-oxo steroids containing a double bond between positions  3 and 4." href="http://classyfire.wishartlab.com/tax_nodes/C0002974" rel="noopener" target="_blank">3-oxo delta-4-steroids</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Steroids containing a double bond between positions 4 and 5." href="http://classyfire.wishartlab.com/tax_nodes/C0002978" rel="noopener" target="_blank">Delta-4-steroids</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Compounds containing a cylohexenone moiety, which is a six-membered aliphatic ring that carries a ketone and has one endocyclic double bond." href="http://classyfire.wishartlab.com/tax_nodes/C0004325" rel="noopener" target="_blank">Cyclohexenones</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Compounds containing a gamma butyrolactone moiety, which consists of an aliphatic five-member ring with four carbon atoms, one oxygen atom, and bears a ketone group on the carbon adjacent to the oxygen atom." href="http://classyfire.wishartlab.com/tax_nodes/C0001245" rel="noopener" target="_blank">Gamma butyrolactones</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Heterocyclic compounds containing a saturated, aliphatic, five-membered ring where a carbon is replaced by an oxygen." href="http://classyfire.wishartlab.com/tax_nodes/C0002648" rel="noopener" target="_blank">Tetrahydrofurans</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Organic compounds containing an ester of thiocarboxylic acid, with the general structure RC(=S)XR' (R=H, alkyl, aryl; R'=alkyl, aryl; X=O,S)." href="http://classyfire.wishartlab.com/tax_nodes/C0001200" rel="noopener" target="_blank">Thioesters</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Carboxylic acid derivatives in which the carbon atom from the carbonyl group is attached to an alkyl or an aryl moiety through an oxygen atom (forming an ester group)." href="http://classyfire.wishartlab.com/tax_nodes/C0001238" rel="noopener" target="_blank">Carboxylic acid esters</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Ester derivatives of carbothioic S-acids, with the general structure RSC(=O)R' where R = organyl group and R' = H or organyl group." href="http://classyfire.wishartlab.com/tax_nodes/C0003872" rel="noopener" target="_blank">Carbothioic S-esters</a></span><span class="list-separator"> / </span><span class="separated-list-item"><a class="classyfire-taxnode" data-content="Organosulfur compounds a sulfenyl group with the general formula RS (R = organyl)." href="http://classyfire.wishartlab.com/tax_nodes/C0003260" rel="noopener" target="_blank">Sulfenyl 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 oxygen atom linked to a ring carbon." href="http://classyfire.wishartlab.com/tax_nodes/C0004140" rel="noopener" target="_blank">Oxacyclic compounds</a></span></span></span><span class="hidden-taxonomy" style="display: none"><span class="list-separator"> / </span><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="Carboxylic acids containing exactly one carboxyl groups." href="http://classyfire.wishartlab.com/tax_nodes/C0001137" rel="noopener" target="_blank">Monocarboxylic acids and derivatives</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></span><a class="taxonomy-toggler" href="javascript:void();"><div class="drugbank-icon icon-expand"><svg class="icon" role="img" title="expand">
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