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| Formula | C20H24N4O3 | 
| Molar mass | 368.437 g·mol−1 | 
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N-Desethyletonitazene (NDE, Noretonitazene) is a benzimidazole derivative with potent opioid effects which has been sold as a designer drug. It is better known as an active metabolite of the related compound etonitazene, but has similar activity to the parent compound and has sometimes appeared as a drug of abuse in its own right, [2] [3] first being identified in New Zealand in 2024. [4] [5]