3-allyfentanyl is a fentanyl derivative opioid that can cause itching, nausea and serious respiratory depression. Fentanyl and its analogs have killed thousands of people around the world as drugs of abuse.

3-Methylfentanyl is an opioid analgesic and is an analog of the potent opioid, fentanyl. 3-Methylfentanyl is one of the most powerful opioid drugs sold illegally and is estimated to be between 400-6000 times more potent than morphine in certain cases. 3-Methy…

3-Methyl-thiofentanyl is a [fentanyl] analog and an opioid analgesic that works by inducing central nervous system (CNS) depression.

4-Phenylfentanyl is a sythetic opioid derived from fentanyl. 4-Phenylfentanyl is around 8x the potency of fentanyl in analgesic tests on animals, but more complex 4-heteroaryl derivatives such as substituted thiophenes and thiazoles are more potent still, as …

?-Hydroxythiofentanyl is an analgesic of the _opioid_ class. This drug is an analog of fentanyl, a potent opioid.

?-Methylacetylfentanyl is an analog of fentanyl with opioid analgesic properties. It was categorized under the Schedule I in the US and it was illegally sold in early 1980. ?-Methylacetylfentanyl synthesis process is very similar to ?-methylfentanyl with the …

?-Methylfentanyl is an analog of fentanyl with opioid analgesic properties.

?-Methylfentanyl is an analgesic of the _opioid_ class. It is an analog of the potent opioid, fentanyl.

AeroLEF™ (aerosolized liposome-encapsulated fentanyl) is a novel, proprietary inhalation formulation of free and liposome-encapsulated fentanyl intended to provide rapid, extended and personalized analgesia for patients experiencing acute pain episodes. AeroL…

A short-acting opioid anesthetic and analgesic derivative of fentanyl. It produces an early peak analgesic effect and fast recovery of consciousness. Alfentanil is effective as an anesthetic during surgery, for supplementation of analgesia during surgical pro…

alpha-methylthiofentanyl is an opioid analgesic that is an analog of fentanyl.

Aniline, phenylamine or aminobenzene is an organic compound with the formula C6H5NH2. Consisting of an amine attached to a benzene ring, aniline is the prototypical aromatic amine. Being a precursor to many industrial chemicals, its main use is in the manufac…

AT3022, the Altea Therapeutics’s fentanyl citrate transdermal patch designed to provide safe and rapid management of moderate to severe chronic pain.

Benzylfentanyl (R-4129) is a fentanyl analog opioid that was on the list of Schedule I drugs in America in 1985 due to its structural similarity to fentanyl. In 2010 it was removed from the list after it was found to have minimal opioid activity. Benzylfentan…

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Brifentanil (also known as A-3331) is an analog of fentanyl, a potent opioid. This drug is classified as an opioid analgesic and was developed in the early 1990s. The effects of brifentanil are very similar to those of alfentanil, with strong but short lastin…

Buprenorphine is a weak partial mu-opioid receptor agonist and a weak kappa-opioid receptor antagonist used for the treatment of severe pain.[A186283,A186292] It is also commonly used as an alternative to [methadone] for the treatment of severe opioid addicti…

Butyrfentanyl or butyrylfentanyl (not to be confused with 3-methylfentanyl) is a potent short-acting synthetic opioid analgesic drug.[A182054] It is an analog of [fentanyl] with roughly 1/30 the potency.[L7811] Butyrfentanyl was first synthesized in 1961 by J…

Carfentanil or carfentanyl (Wildnil) is an analogue of the popular synthetic opioid analgesic fentanyl, and is one of the most potent opioids known (also the most potent opioid used commercially). Carfentanil was first synthesized in 1974 by a team of chemist…

Dezocine is a partial opiate drug and is used for pain management. Dezocine is a very effective alternative to fentanyl when administered during outpatient laparoscopy, although is associated with an increased incidence of postoperative nausea.

A butyrophenone with general properties similar to those of haloperidol. It is used in conjunction with an opioid analgesic such as fentanyl to maintain the patient in a calm state of neuroleptanalgesia with indifference to surroundings but still able to coop…

Fentanyl, a potent opioid agonist, was developed in the 1950s to fill a need for strong and rapid analgesia.[A179542] Because of these characteristics, fentanyl is commonly used to treat chronic cancer pain or in anesthesia.[Label,L6598,L6601,L6604,L6607,L922…

Lofentanil is an analog of fentanyl and is one of the most potent opioids available today. It displays most similarity to carfentanil (4-carbomethoxyfentanyl) and is considered to be slightly more potent than this drug.

Methadone is a potent synthetic analgesic that works as a full µ-opioid receptor (MOR) agonist and N-methyl-d-aspartate (NMDA) receptor antagonist. As a full MOR agonist, methadone mimics the natural effects of the body's opioids, endorphins, and enkephalins …

Mirfentanil is a derivative of fentanyl that presents high selectivity for the mu opioid receptor. At lower doses, it antagonizes the analgesic effects of alfentanil and substitutes for naloxone in morphine-treated monkeys; however, it also reverses naloxone-…

Morphine, the main alkaloid of opium, was first obtained from poppy seeds in 1805.[A176035] It is a potent analgesic, though its use is limited due to tolerance, withdrawal, and the risk of abuse.[A176050] Morphine is still routinely used today, though there …

Naloxone is an opioid antagonist medication used to block or reverse the effects of opioid drugs, particularly within the setting of drug overdoses which are rapidly becoming a leading cause of death worldwide.[A234594] More specifically, naloxone has a high …

Ohmefentanyl is an extremely potent opioid analgesic drug which selectively binds to the µ-opioid receptor. The Chinese have recorded ohmefentanyl as having a potency that is 6,300 times morphine. Ohmefentanyl is one of the most potent ? -receptor agonists kn…

p-Fluorofentanyl is an opioid analgesic being an analogue of fentanyl developed by Janssen Pharmaceutica in the 1960s. p-Fluorofentanyl was sold briefly on the US black market in the early 1980s, before the introduction of the Federal Analog Act which for the…

Phenaridine (2,5-Dimethylfentanyl) is a synthetic fentanyl derivative opioid. It was developed in 1972, and is used for surgical anasthesia in Russia. Phenaridine has similar effects to fentanyl. In rat studies, it was less potent than fentanyl. Side effects …

R-30490 is an opioid related to carfentanil used as an animal tranquilizer. It was first synthesized by Janssen Pharmaceutica as part of a structure-activity relationship study of fentanly and its derivatives. R-30490 was found to be the most selective agonis…

Remifentanil (marketed by Abbott as Ultiva) is a potent ultra short-acting synthetic opioid given to patients during surgery for pain relief and adjunctive to an anaesthetic. Remifentanil is a specific mu-type-opioid receptor agonist which means it reduces sy…

Sufentanil is an opioid analgesic that is used as an adjunct in anesthesia, in balanced anesthesia, and as a primary anesthetic agent. It is administered by the intravenous, epidural and sublingual routes. Also known as _Dsuvia_, the sublingual form is u…

Thienylfentanyl is a fentanyl analog analgesic that was sold on the black market in the 1980s until the Federal Analog Act scheduled drugs based on structural similarity rather than scheduling drugs individually. Thienylfentanyl has a similar synthesis pathwa…

Trefentanil (A-3665) is a fentanyl analogue opioid developed in 1992. It is more potent and shorter acting than alfentanil. Trefentanil is not used in clinics due to the severity of its respiratory depression, though it is still used in research.