A sort of artificial opioid, two-benzyl benzimidazole — or nitazene — opioids were being initial created from the 1950s as analgesics, but have been discovered for being so powerful they have been hardly ever approved or promoted as medicines​[one]​. Carfentanil, protonitazene, and isotonitazene are three new synthetic opioids that negatively https://authenticchemicals.com/