From HandWiki - Reading time: 6 min
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| Formula | C22H30N2O |
| Molar mass | 338.495 g·mol−1 |
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Secofentanyl is an opioid derivative which is an analogue of fentanyl where the piperidine ring has been cleaved to form an open-chain structure. It is around 40× less potent than fentanyl itself but still 5–6× the potency of morphine in animal tests.[1][2]