BiomarkerOf Methoxyphenols coffee based beverage product coffee (liquid drink) beer 4-ethylguaiacol InChI=1S/C9H12O2/c1-3-7-4-5-8(10)9(6-7)11-2/h4-6,10H,3H2,1-2H3 CHWNEIVBYREQRF-UHFFFAOYSA-N HMDB0040175 62465 16200549 FOBI:050236 17109870