Tetramethylcyclopropylfentanyl
chemical compound
Tetramethylcyclopropylfentanyl is an opioid analgesic that is an analog of fentanyl and has been sold as a designer drug.
Side effects
Side effects of fentanyl analogs are similar to those of fentanyl itself, which include itching, nausea and potentially serious respiratory depression, which can be life-threatening. Fentanyl analogs have killed hundreds of people throughout Europe and the former Soviet republics since the most recent resurgence in use began in Estonia in the early 2000s, and novel derivatives continue to appear. A new wave of fentanyl analogues and associated deaths began in around 2014 in the US, and have continued to grow in prevalence; especially since 2016 these drugs have been responsible for hundreds of overdose deaths every week.
Legal status
In the United States, fentanyl-related substances are Schedule I controlled substances. Tetramethylcyclopropylfentanyl was banned in Finland in September 2017, and in Sweden in October 2017.
Begin with the source’s own compact description: “Tetramethylcyclopropylfentanyl” is chemical compound. The dossier treats that line as a proposition to test through Tetramethylcyclopropylfentanyl, chemical and compound, not as a finished interpretation.
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The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Dec 27, 2025. The linked authority identifier is Q48861162. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2014, 2016 and 2017.
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This entry incorporates text from “Tetramethylcyclopropylfentanyl” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.