- Codeine to Morphine Conversion Review
- "Homebake" Labs: Codeine to Morphine and Heroin
- Extraction and purification of morphine from opium
- New patent on the extraction and purification of morphine from opium
- Opium - Poppy Cultivation, Morphine and Heroin Manufacture
- Morphine and Opium Alkaloids
- Identification tests of morphine
- Synthesis of Dimenoxadol
- Total synthesis of (-)-Morphine (PDF)
- Total synthesis of (+)-Morphine (PDF)
- Synthesis of Levorphanol (levo-Dromoran)
- Synthesis of Pethidine (Demerol)
- One-step synthesis of Prodine
- Morphine and structurally related analgesics
- Pethidine-type Analgesics Overview
- The Stereochemistry of Morphine
- Total Synthesis of Morphine
- Codeine FAQ
- Chromic's Coldwater Codeine Extraction
- Synthesis of a Clonitazene/Etonitazene Analog
- Conversion of Thebaine to Codeine
- Anileridine Synthesis and Pharmacology
Hydrocodone/Hydromorphone
- Codeinone from Thebaine
- Catalytic rearrangement of Morphine/Codeine to Hydromorphone/Hydrocodone
- Quantitative Conversion of Codeine to Hydrocodone
- 14-Hydroxycodeinone from Codeine (PDF)
- 14-Hydroxycodeinone from Thebaine (PDF)
Oxycodone/Oxymorphone
- Oxycodone and Codeinone from Codeine
- Oxycodone and Oxymorphone from Codeine
- Oxymorphone from Oxycodone
- Oxymorphone from Oxycodone with BBr3
Methadone
- Synthesis of Methadone
- Dibenzo-18-crown-6 as PTC in Bockmühl's synthesis of Methadone
- Methadone Chemistry: A Review
Fentanyl related
- Fentanyl Synthesis
- Discussions on a Fentanyl analog suggested by Drone #342
- Carfentanil synthesis
- Total Synthesis of Sufentanil
- Synthesis and evaluation of 4-Methyl-Fentanyl (PDF)
- Synthesis and evaluation of 2,3-seco-Fentanyl (PDF)
- Theoretical study of 2,3-seco-Fentanyl and other Fentanyl analogs
- Fentanyl Designer Drugs: Past History and Future Prospects
- The Identification of China White
- Designer Drugs: Past History and Future Prospects
