3’-Nitro-2’-hydroxy[1,1’]-biphenyl-3-carboxylic Acid is an intermediate used in the synthesis of N-Hydroxy Eltrombopag (H825795), which is a derivative compound of Eltrombopag (508000), an agonist of the Thrombopoietin (Tpo) receptor, used as treatment for thrombocytopenia.