CAS Number: 82611-85-6
N-Ethyl-N-3-Sulfopropyl-M-Anisidine (ESPA) is a chromogenic reagent used in colorimetric enzyme assays for detection of oxidative enzymes including peroxidase and laccase, which are relevant in herbicide metabolism and plant biochemistry research. It forms a colored product upon oxidation that is measured spectrophotometrically, providing a sensitive tool for studying herbicide-induced oxidative stress pathways in plants. This compound is also used in diagnostic kit development for plant pathology assays. AB Enterprises provides ESPA to research laboratories and diagnostic companies engaged in plant science and agrochemical research. Its superior chromogenic sensitivity enhances detection limits in enzymatic assays.
| CAS Number | 82611-85-6 |
| Molecular Formula | C12H18NO5SNa |
| Molecular Weight | 327.33 g/mol |
| Appearance | White to off-white crystalline powder |
| Assay / Purity | ≥96.0% (HPLC) |
| Melting Point | >200 °C |
| Solubility | Freely soluble in water |
| pH (1% solution) | 6.0–8.0 |
| Storage | Store at room temperature in sealed containers away from light and moisture |
| Packaging | As per requirement |
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