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Library npyrrolidino_protonitazene

Library ocfentanil Ocfentanil is a potent synthetic opioid structurally related to fentanyl that was developed in the early 1990s as one of a series of potent…

Library ocfentanyl Ocfentanil is a potent synthetic opioid structurally related to fentanyl that was developed in the early 1990s as one of a series of potent…

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Library odsmt O-DSMT is the primary active metabolite of tramadol and is considerably more potent (2-4 times). Unlike tramadol, it lacks significant sero…

Library opium Opium is a naturally occurring analgesic harvested as a latex from ripe Papaver somniferum (opium poppy) pods. The sap of the poppy plant p…

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Library orthomethylfentanyl

Library oxycodone Oxycodone is a semisynthetic opioid of the morphinan class, synthesized from poppy-derived thebaine. Developed in Germany in 1916 as part o…

Library oxymorphone Oxymorphone (also known by the brand name Opana) is a semi-synthetic opioid analgesic used in the management of moderate to severe pain, an…

Library parafluorofentanyl Parafluorofentanyl is an extremely potent synthetic opioid and analogue of fentanyl, originally developed by Janssen Pharmaceutica during t…

Library pentazocine A synthetic opioid used as an analgesic. It is only used IM and IV in the medical field and has respiratory depressant effects. It is pregn…

Library pethidine Pethidine is significantly less safe than other opioids due to its toxic metabolite norpethidine, which accumulates with repeated dosing an…

Library phenomorphan Phenomorphan is an opioid analgesic. It is not currently used in medicine, but has similar side-effects to other opiates, which include itc…

Library pholcodeine Pholcodine is an opioid cough suppressant (antitussive). It helps suppress unproductive coughs and also has a mild sedative effect, but has…

Library pronitazene Active in double-digit microgram doses; steep dose-response curve. Volumetric dosing essential due to extreme potency. Multiple naloxone do…

Library protodesnitazene Protodesnitazene is a benzimidazole derivative which has been sold as a designer drug, and has potent opioid effects. It has been identifie…

Library pseudocodeine Pseudocodeine is an isomer of codeine, once studied for its use as an analgesic. Like codeine, its neighbouring alkene and alcohol groups a…

Library pst Poppy Tea can be made from poppy pods, stalks and seeds, and contains various opium alkaloids including primarily Morphine, as well as Code…

Library racemorphan Racemorphan, or morphanol, is the racemic mixture of the two stereoisomers of 17-methylmorphinan-3-ol, each with differing pharmacology and…

Library remifentanil Standard anesthetic practice uses continuous infusions of 0.05-0.25 ug/kg/min; analgesia ceases within approximately 5 minutes of pump stop…

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Library spirobrorphine Spirobrorphine is a synthetic opioid chemical compound which has been sold as a designer drug, first reported in the USA in February 2026.…