***ProuductName***CASNo.2353-33-5StructureMolecularFormulaC8H12N4O4MolecularWeight228.21Descriptionwhiteoroff-whitesolidIdentification(FT-IR)c***istentwithreference1HNMRc***istentwithreferencePurity(HPLC)NLT99.0%α-isomer（HPLC）Maximum0.5%RelatedSubstances(HPLC)Maximum1.0%MoistureContent(KF)Maximum0.5%He***ymetalsMaximum20ppmResidueonignitionMaximum0.1%ProductUseTreatmentofmyelodysplasticsyndromes(MDS)API)