(1,1'-Biphenyl)-2-carboxylic acid, 4'-((7-hydroxy-5-propylpyrazolo(1,5-a)pyrimidin-6-yl)methyl)- 167375-28-2 6-((2'-Carboxybiphenyl-4-yl)methyl)-7-hydroxy-5-propylpyrazolo(1,5-a)pyrimidine