if (isIE && isIE < 10) try document.getElementById("js-rendered-content").innerHTML = '

Your browser does not meet minimal technical specifications required by this application.

Please upgrade your browser to use this application. For more information, please refer to the list of browsers NCBI supports.'; catch (err)




<!--!function(e,t,a,n,o,r,c)function()(e.ga.q=e.ga.q,e.ga.l=1*new Date,r=t.createElement(a),c=t.getElementsByTagName(a)[0],r.async=1,r.src="https://www.google-analytics.com/analytics.js",c.parentNode.insertBefore(r,c)(window,document,"script",0,"ga"),ga("create",trackingId:"UA-43649143-1",cookieDomain:"ncbi.nlm.nih.gov",name:"PubChemTracker");tryvar canonical=document.querySelector("link[rel='canonical']");if(canonical)var href=canonical.getAttribute("href"),page=href.match(/.gov(.*)$/)[1];page&&ga("PubChemTracker.set","page",page)var track_meta=document.querySelector("meta[name='pubchem_tracking_category']"),cat=track_meta&&track_meta.getAttribute("content");window.ga_category=catfinallyga("PubChemTracker.send","pageview"),ga("PubChemTracker.require","GTM-MTC5VWF")function findParent(e,t)for(;t;)if((t.nodeNamereturn nullfunction outboundLinkHandler(e)trycatch(e)trydocument.addEventListener("click",outboundLinkHandler,!1),document.addEventListener("auxclick",outboundLinkHandler,!1),document.addEventListener("contextmenu",outboundLinkHandler,!1),window.addEventListener("copy",function(e)var t="";window.getSelection?t=window.getSelection().toString():document.selection&&"Control"!==document.selection.type&&(t=document.selection.createRange().text),t&&ga("PubChemTracker.send","event",window.ga_category,"copy","LENGTH="+t.length+"; "+t.substring(0,500))),window.addEventListener("unload",function(e)ga("PubChemTracker.send","event",window.ga_category,"exit","Page exit"))catch(e)