Gadocoletic acid (also Gadoletic acid trisodium salt, or B22956/1) is a magnetic resonance contrast agent. Based on results from animal imaging experiments and pharmacokinetic data it was suggested that gadocoletic acid trisodium salt has strong potential for clinical use in Magnetic Resonance Coronary Angiography and Myocardial Perfusion Imaging. The small molecules of gadocoletic acid are bound after injection to large human serum albumin molecules in coronary vessels with the result of high vessel/muscle contrast. The ability of B229563− (anion) to bind to more than one site on the albumin molecule allows a positive correlation between dose and blood relaxation rate enhancement at doses higher than 0.05 mmol/kg, the dose that produces roughly a total plasma concentration equimolar to the albumin concentration at equilibrium distribution. Gadocoletic acid is thought to be highly efficacious in inversion recovery-prepared 3D gradient-recalled echo, navigator echo-gated coronary angiography in humans already at doses below 0.1 mmol/kg.

Traxoprodil (CP-101,606) is a potent, selective N-Methyl-D-aspartate (NMDA) receptor (NR2B subunit) antagonist under development by Pfizer for its potential as a neuroprotectant in head injury and neurodegenerative disease. It is in phase II trials in the US and in phase I in Japan for the potential treatment of head injury, such as, Depressive Disorder, Major and Parkinson's Disease. CP-101,606 does not protect against glutamate-induced neurotoxicity in cultured cerebellar neurons, up to a dose of 10 uM. These results are consistent with CP-101,606 being a potent NMDA antagonist, selective for the type of NMDA receptor associated with the hippocampus. Some further investigation revealed that CP-101,606 was associated with a dose-related dissociation and amnesia. These results support the hypothesis that glutamate antagonists may be useful antidyskinetic agents. However, future studies will have to determine if the benefits of dyskinesia suppression can be achieved without adverse cognitive effects.

Valnivudine, also known as FV-100, a prodrug that has been indicated as a potential antiviral for the treatment of shingles (herpes zoster) that could both reduce the pain burden of the acute episode and reduce the incidence of post‐herpetic neuralgia compared to available treatments. Phase I clinical trial with FV100 showed safety and tolerability in healthy volunteers. Valnivudine also participated in phase III, where its efficacy was compared with valacyclovir; however, the study was terminated.

Truxipicurium, a derivative of alpha-truxillic acid, a curare-like drug, is a neuromuscular blocking agent with rigid structure.

Pobilukast is the Leukotriene D4 receptor antagonist. Pobilukast significantly attenuated the Salmonella enteritidis endotoxin-induced thrombocytopenia but had no effect on either the endotoxin-induced early leukopenia or late leukocytosis. Additionally, Pobilukast significantly reduced the endotoxin-induced hemoconcentration and improved survival to 30% at 48 hr. Pobilukast dose-dependently inhibited the immediate hemodynamic changes after leukotriene D4 (LTD4) injections. Pobilukast also attenuated the increase in vascular permeability and the prolonged decrease in CO, suggesting that the observed cardiac and vascular effects of LTs were mediated by stimulation of LT receptors. A shift toward the right of the dose-response curves to histamine with pobilukast compared to that with placebo in three subjects was demonstrated, whereas the active compound did not exhibit any protective effect against histamine in the remaining nine subjects. It was concluded that there is a leukotriene component to the bronchial responses to histamine in some, but not all, subjects. Pobilukast had been in phase II clinical trial for the treatment of asthma. However, this development was discontinued.

Valnivudine, also known as FV-100, a prodrug that has been indicated as a potential antiviral for the treatment of shingles (herpes zoster) that could both reduce the pain burden of the acute episode and reduce the incidence of post‐herpetic neuralgia compared to available treatments. Phase I clinical trial with FV100 showed safety and tolerability in healthy volunteers. Valnivudine also participated in phase III, where its efficacy was compared with valacyclovir; however, the study was terminated.

Trimeperidine (promedol) is the earliest and mostly studied opioid analgesic. Trimeperidine stimulates opioid receptors in the central nervous system. Compared with morphine, it has a weaker and shorter analgesic effect, less affects the respiratory, vomiting and vagal centers, does not cause smooth muscle spasm (except for the myometrium), and has a moderate antispasmodic and hypnotic effect. It is used to treat severe pain syndrome, acute left ventricular failure, pulmonary edema, cardiogenic shock, preparation for surgery, childbirth, high fever, post-transfusion complications, poisoning with atropine, barbiturates, barium, gasoline, boric acid, strong acids, carbon monoxide, turpentine, formalin, formalin. It has several side effects. Administration of this substance is associated with the development of life-threatening conditions accompanied by the suppression of respiration center. Analgesic trimeperidine (promedol) was included into the health care kits by various Ministries of the Russian Federation at different times.

Anisodamine is a naturally occurring atropine derivative that has been isolated, synthesized and characterized by scientists in the People's Republic of China. Anisodamine is a non-specific cholinergic antagonist. Anisodamine has been shown to interact with and disrupt liposome structure which may reflect its effects on cellular membranes. Experimental evidence implicates anisodamine as an anti-oxidant that may protect against free radical-induced cellular damage. Its cardiovascular properties include depression of cardiac conduction and the ability to protect against arrhythmia induced by various agents. Anisodamine is a relatively weak alpha(1) adrenergic antagonist which may explain its vasodilating activity. Its anti-thrombotic activity may be a result of inhibition of thromboxane synthesis. Numerous therapeutic uses of anisodamine have been proposed including treatment of septic shock, various circulatory disorders, organophosphorus (OP) poisoning, migraine, gastric ulcers, gastrointestinal colic, acute glomerular nephritis, eclampsia, respiratory diseases, rheumatoid arthritis, obstructive jaundice, opiate addiction, snake bite and radiation damage protection. The primary therapeutic use of anisodamine has been for the treatment of septic shock. Several mechanisms have been proposed to explain its beneficial effect though most mechanisms are based upon the assumption that anisodamine ultimately acts by an improvement of blood flow in the microcirculation. Preliminary studies suggest another important therapeutic use of anisodamine is for the treatment of OP poisoning. Anisodamine has been employed therapeutically since 1965 in the People’s Republic of China primarily to improve blood flow in circulatory disorders such as septic shock, disseminated intravascular coagulation (DIC) and as an antidote to organophosphate poisoning.

Clibucaine is a piperidine derivative possessing local anesthetic properties and used in the clinic as a local anesthetic in the 1980s.