4-Nitrophenyl phosphate disodium salt hexahydrate
SIGMA/N4645 - powder, BioReagent, suitable for cell culture, ≥97%
Synonym: p-Nitrophenyl phosphate disodium hexahydrate; Disodium 4-nitrophenyl phosphate hexahydrate; di-Sodium 4-nitrophenyl phosphate; pNPP disodium hexahydrate
CAS Number: 333338-18-4
Empirical Formula (Hill Notation): C6H4NNa2O6P · 6H2O
Molecular Weight: 371.14
EC Number: 224-246-5
MDL Number: MFCD00066288
Linear Formula: O2NC6H4OP(O)(ONa)2 · 6H2O
Product Type: Chemical
| assay | ≥97% |
| biological source | synthetic (organic) |
| form | powder |
| InChI | 1S/C6H6NO6P.2Na.6H2O/c8-7 |
| InChI key | KAKKHKRHCKCAGH-UHFFFAOYSA |
| product line | BioReagent |
| Quality Level | 200 ![]() |
| SMILES string | O.O.O.O.O.O.[Na+].[Na+].[ |
| solubility | H2O: 100 mg/mL |
| storage temp. | −20°C |
| technique(s) | cell culture | mammalian: suitable |
| Application: | 4-Nitrophenyl phosphate disodium salt hexahydrate has been used: • as a component in diethanolamine buffer to detect alkaline phosphatase-conjugated antibodies in enzyme linked immunosorbent assay (ELISA) • to treat adherent cells in adhesion assay • as a phosphatase substrate in in vitro phosphatase assay in substrate buffer for ELISA |
| Biochem/physiol Actions: | p-Nitrophenyl phosphate (pNPP) is the substrate of choice for use with alkaline phosphatase in enzyme linked immunosorbent assay (ELISA) procedures. It is the substrate of choice in alkaline phosphatase systems due to its high sensitivity. This substrate produces a soluble end product that is yellow in color and can be read spectrophotometrically at 405 nm. This product is tested for use in cell culture applications. 4-nitrophenyl phosphate (pNPP), a small-molecule substrate can be used to study on alkaline phosphatases, acid phosphatases etc. |
| General description: | Chromogenic substrate for the determination of acid and alkaline phosphatases. The reaction produces a soluble end product that is yellow in color. The reaction may be stopped with 3 N NaOH and read at 405 nm. |
| Packaging: | 1, 5 g in poly bottle |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥97% |
| Storage Temp. | −20°C |
| UNSPSC | 12352204 |

