Phenylpiperazines

Mianserin, sold as Tolvon and other brand names, is an atypical antidepressant used primarily for treating depression in Europe and other countries. It is a tetracyclic antidepressant (TeCA) and is closely related to mirtazapine in terms of chemical structure, actions, and effects, although mianserin has greater noradrenergic activity and less 5-HT3 receptor antagonism.

Letermovir (INN; brand name Prevymis) is an antiviral drug for the prevention of cytomegalovirus (CMV) infections. It has been tested in CMV infected patients with allogeneic stem cell transplants and may also be useful for other patients with a compromised immune system such as those with organ transplants or HIV infections. The drug was initially developed by the anti-infective division at Bayer, which became AiCuris Anti-infective Cures AG through a spin-out and progressed the development to end of Phase 2 before the project was sold to Merck & Co for Phase 3 development and approval.

Venetoclax, sold under the brand names Venclexta and Venclyxto, is a medication used to treat adults with chronic lymphocytic leukemia (CLL), small lymphocytic lymphoma (SLL), or acute myeloid leukemia (AML).

Levodropropizine is a cough suppressant. It is the levo isomer of dropropizine. It acts as a peripheral antitussive, with no action in the central nervous system. It does not cause side effects such as constipation or respiratory depression which can be produced by opioid antitussives such as codeine and its derivatives. 150px|thumbnail|right|Levopront In September 2021, Korea United Pharm file lawsuits against 15 drug manufacturers as patent infringement protection for its 2017 registered antitussive drug Levotics CR Tab. (levodropropizine). The cases are anchored on violation of its patent f

Niaprazine (INN; brand name Nopron) is a sedative-hypnotic drug of the phenylpiperazine group. It has been used in the treatment of sleep disturbances since the early 1970s in several European countries including France, Italy, and Luxembourg. It is commonly used with children and adolescents on account of its favorable safety and tolerability profile and lack of abuse potential.

Dropropizine (or dipropizine) is a cough suppressant that is sold in Germany, Central America, South America, and some African countries such as Congo. It is sold as suppositories, tablets, and syrup. It is used to stop a cough caused by allergies or a cold.

Dapiprazole (brand name Rev-Eyes) is an alpha-1 blocker. It is used to reverse mydriasis after eye examination.

MPPF, with the full name 2'-methoxyphenyl-(N-2'-pyridinyl)-p-fluoro-benzamidoethyipiperazine, is a compound that binds to the serotonin-1A receptor. Labeled with fluorine-18 it has been used as a radioligand with positron emission tomography. It has, e.g., been used to examine the difference in neuroreceptor binding in the human brain across sex and age.

Mitratapide is a veterinary medication used for the treatment of overweight and obese dogs sold under the brand name Yarvitan. Its mechanism of action involves inhibition of microsomal triglyceride transfer protein (MTP) which is responsible for the absorption of dietary lipids. Clinical study also suggests that mitratapide may help to reverse insulin resistance in dogs.

LP-44 is a drug which acts as a potent and selective agonist at the 5HT7 serotonin receptor. While LP-44 is less selective than the related compound LP-12, it has been more widely used in research and has been used to show the complex role of 5-HT7 receptors in several aspects of brain function, including regulation of the sleep-wake cycle and roles in stress, learning and memory.

Monatepil is a calcium channel blocker and α1-adrenergic receptor antagonist used as an antihypertensive.

NAN-190 is a drug and research chemical widely used in scientific studies. It was previously believed to act as a selective 5-HT1A receptor antagonist, but a subsequent discovery showed that it also potently blocks the α2-adrenergic receptor. The new finding has raised significant concerns about studies using NAN-190 as a specific serotonin receptor antagonist.

Bifeprunox (INN; code name DU-127,090) is an atypical antipsychotic which, similarly to aripiprazole, combines minimal D2 receptor agonism with serotonin receptor agonism. It was under development for the treatment of schizophrenia, psychosis and Parkinson's disease.

Vesnarinone (INN) is a cardiotonic agent. A mixed phosphodiesterase 3 inhibitor and ion-channel modifier that has modest, dose-dependent, positive inotropic activity, but minimal negative chronotropic activity. Vesnarinone improves ventricular performance most in patients with the worst degree of heart failure.

Fluanisone is a typical antipsychotic and sedative of the butyrophenone chemical class. It is used in the treatment of schizophrenia and mania. It is also a component (along with fentanyl) of the injectable veterinary formulation fentanyl/fluanisone (Hypnorm) where it is used for rodent analgesia during short surgical procedures.

BMY-7,378 is a 5-HT1A receptor weak partial agonist/antagonist and α1D-adrenergic receptor antagonist.

BP-897 is a drug used in scientific research which acts as a potent selective dopamine D3 receptor partial agonist with an in vitro intrinsic activity of ~0.6 and ~70x greater affinity for D3 over D2 receptors and is suspected to have partial agonist or antagonist activity in vivo. It has mainly been used in the study of treatments for cocaine addiction. A study comparing BP-897 with the potent, antagonistic, and highly D3 selective SB-277,011-A found, "SB 277011-A (1–10 mg/kg) was able to block cue-induced reinstatement of nicotine-seeking, indicating that DRD3 selective antagonism may be an

Ranbezolid (RBx7644) is an oxazolidinone antibacterial. It competitively inhibits monoamine oxidase-A (MAO-A).

Tolpiprazole (INN, BAN) (developmental code name H-4170) is an anxiolytic drug of the phenylpiperazine group that was never marketed.

1-(2-Diphenyl)piperazine, also known as RA-7, is a drug that acts as a potent and selective antagonist at the 5HT serotonin receptor. It was discovered as an active metabolite of the synthetic 5-HT agonists LP-12 and LP-211 and unexpectedly turned out to be a potent antagonist with selectivity approaching that of the parent molecules, despite its much simpler structure.

Rifalazil (also known as KRM-1648 and AMI-1648) is an antibiotic substance that kills bacterial cells by blocking off the β-subunit in RNA polymerase. Rifalazil is used as a treatment for many different diseases. The most common are Chlamydia infection, Clostridioides difficile associated diarrhea (CDAD), and tuberculosis (TB). Using rifalazil and the effects that coincide with taking rifalazil for treating a bacterial disease vary from person to person, as does any drug put into the human body. Food interactions and genetic variation are a few causes for the variation in side effects from the

LP-12 is a drug which acts as a potent agonist at the 5HT7 serotonin receptor, with very high selectivity over other tested receptor subtypes such as the serotonin 5-HT1A and 5-HT2A, and the dopamine D2 receptor. It has been used to research the involvement of the 5-HT7 receptor in as yet poorly understood processes such as allodynia and hyperalgesia.