Tags: Drug.
N-Methylcarfentanil (R-32395) is an opioid analgesic drug related to the highly potent animal tranquilizer carfentanil but several thousand times weaker being only slightly stronger than morphine. It was first synthesised by a team of chemists at Janssen Pharmaceutica led by Paul Janssen who were investigating the structure-activity relationships of the fentanyl family of drugs.
