Synonyms: p-Nitrophenyl phosphate disodium hexahydratepNPP-2Na Purity Limit: ≥ 99% (HPLC) CAS No.: 4264-83-9 Molecular Formula: C6H4NNa2O6P·6H2O Molecular Weight: 371.1 MDL No.: MFCD00066288 Appearance: Off-white to pale yellow powder Comments: Phosphatase substrate …