/span><span class="cn">FALSE</span><span class="op">)</span> <span class="op">{</span> <span class="co"># has_ctx_key() &amp; is.na(ctx_key() == "FAKE_KEY")</span></span></span>
<span class="r-in"><span><span class="co"># Pull ecotox hazard data for multiples chemicals</span></span></span>
<span class="r-in"><span><span class="va">dtxsid</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">'D