Metanol (ancol metylic) có công thức là A. <span class="MathJax_Preview" style="color: inherit;"><span class="MJXp-math" id="MJXp-Span-1"><span class="MJXp-mstyle" id="MJXp-Span-2"><span class="MJXp-mtext" id="MJXp-Span-3"> </span><span class="MJXp-msubsup" id="MJXp-Span-4"><span class="MJXp-mi MJXp-italic" id="MJXp-Span-5" style="margin-right: 0.05em;">C</span><span class="MJXp-mn MJXp-script" id="MJXp-Span-6" style="vertical-align: -0.4em;">2</span></span><span class="MJXp-msubsup" id="MJXp-Span-7"><span class="MJXp-mi MJXp-italic" id="MJXp-Span-8" style="margin-right: 0.05em;">H</span><span class="MJXp-mn MJXp-script" id="MJXp-Span-9" style="vertical-align: -0.4em;">5</span></span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-10">O</span><span class="MJXp-mi MJXp-italic" id="MJXp-Span-11">H</span></span></span></span><script type="math/tex" id="MathJax-Element-1">\Large\ C_2H