N-Iodosuccinimide (NIS) is a reagent used in organic chemistry for the iodination of alkenes and as a mild oxidant.
NIS is the iodine analog of N-chlorosuccinimide (NCS) and N-bromosuccinimide (NBS) which are used for similar applications.
| Appearance | White solid |
| Density | 2.245 g/cm3 |
| Melting point | 202–206 °C (396–403 °F; 475–479 K)(dec.) |
| Solubility in water | Soluble in Dioxane, THF, MeCN; Insoluble in ether, CCl4 |
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