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![]() Date: 2014-08-07 14:48:29General anesthetics Anilides Piperidines Morphinans Walrus Diprenorphine Carfentanil Naltrexone Fentanyl Chemistry Organic chemistry Ketones | Source URL: alaska.usgs.govDownload Document from Source WebsiteFile Size: 336,08 KBShare Document on Facebook |