Description Application 4-Fluoro-3-hydroxybenzoic acid may serve as a starting material in the synthesis of the following potent inhibitors of β-arylsulfotransferase IV (β-AST-IV): • 6-(2-(N-4-fluoro-3-hydroxybenzoylamino)ethylamino)purine via reaction with O-benzotriazol-1-yl)-N,N,N’,N’-tetramethyluronium hexafluorophosphate(HBTU) and 6-((2-ammonium trifluroacetate)ethylamino)purine • 6-(12-(N-4-fluoro-3-hydroxybenzoylamino)dodecylamino)purine via reaction with O-benzotriazol-1-yl)-N,N,N’,N’-tetramethyluronium hexafluorophosphate(HBTU) and 6-((12-ammonium trifluroacetate)dodecylamino)purine • 6-(12-(N-4-fluoro-3-hydroxybenzoylamino)dodecylamino)purine via reaction with O-benzotriazol-1-yl)-N,N,N’,N’-tetramethyluronium hexafluorophosphate(HBTU) and 6-((12-ammonium trifluroacetate)dodecylamino)purine • 2-chloro-6-(12-(N-4-fluoro-3-hydroxybenzoylamino)dodecylamino)purine via reaction with O-benzotriazol-1-yl)-N,N,N’,N’-tetramethyluronium hexafluorophosphate(HBTU) and 2-chloro-6-((12-ammonium trifluroacetate)dodecylamino)purine • 12-N-boc-1-N-(4-fluoro-3-hydroxybenzoyl)diaminododecane via reaction with O-benzotriazol-1-yl)-N,N,N’,N’-tetramethyluronium hexafluorophosphate(HBTU) and N-boc-1,12-diaminododecane Packaging 1, 5 g in glass bottle