2-Pyridinecarboxylic acid, 5-((4-hydroxyphenyl)methyl)- 5-((4-Hydroxyphenyl)methyl)-2-pyridinecarboxylic acid 5-(4-Hydroxybenzyl)picolinic acid 5-22-05-00314 (Beilstein Handbook Reference) 56153-30-1 BRN 0478935 Phenopicolinic acid