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Systematic (IUPAC) name
CAS Registry Number 785722-57-8
ATC code None
Chemical data
Formula C16H19NS2
Molecular mass 289.458 g/mol
Physical data
Melting point 167 to 169 °C (333 to 336 °F)
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Pyrrolidinylthiambutene is an opioid analgesic drug from the thiambutene family with around 3/4 of the potency of morphine.[1][2][3] It would be considered an illegal controlled substance analogue in some countries such as the USA, Australia and New Zealand, but is legal in countries not possessing a controlled-substances-analog-act equivalent.


  1. ^ Adamson DW, Green AF. A new series of analgesics. Nature. 1950 Jan 21;165(4186):122. doi:10.1038/165122a0 PMID 15409854
  2. ^ Adamson DW, Duffin WM, Green AF. Dithienylbutylamines as analgesics. Nature. 1951 Jan 27;167(4239):153-4. doi:10.1038/167153b0 PMID 14806409
  3. ^ Green AF. Analgesic and other properties of 3: 3-dithienylalkenylamines. British Journal of Pharmacology and Chemotherapy. 1953 Mar;8(1):2-9. PMID 13066683