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| Formula | C19H25Cl2N3O3 |
| Molar mass | 414.33 g·mol−1 |
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GR-89696 is a drug which acts as a highly selectiveκ-opioidagonist.[1] It has been studied in various animal species, and has been described as selective for the κ2 subtype.[2][3][4] Recent studies have suggested that GR-89696 and related κ2-selective agonists may be useful for preventing theitching which is a common side effect of conventionalopioidanalgesic drugs, without the additional side effects of non-selective kappa agonists.[5] The structure bound to theκ-opioid receptor has been reported.[6]