Methoprene is a pesticide that acts as a juvenile hormone agonist. Although developed initially against insects, it has since been shown to have toxic effects on larval and adult crustaceans. Methoprene was one of the several pesticides applied to the Western Long Island Sound (WLIS) watershed area during the summer of 1999. Methoprene is a racemic mixture of two enantiomers (R and S in a ratio of 1:1). The activity of the compound as a juvenile hormone is restricted to the S enantiomer. Recent data have been describing the male sexual enhancement after methoprene treatment in Anastrepha fraterculus (Diptera: Tephritidae). It has been shown, that a sustained response doesn`t not fade away after sexual maturation, thus the potential benefits of using methoprene to increase the efficiency of the sterile insect technique, which is an environmentally safe method to control this fruit pest, have been proposed.

Propenzolate is a pyridine derivative patented by National Research Development Corp. as an anticholinergic agent. Propenzolate is effective antidotes to the cholinesterase-inhibiting action of various organophosphorus compounds. In clinical trials, Propenzolate has an activity that decreases to some extent the secretion of hydrochloric acid and the volume of gastric juice. Adverse effects, including nausea, vomiting, weakness, and drowsiness, as well as xerostomia and cycloplegia, are observed in a high percentage of patients receiving 0.5 to 1.0 mg. every 12 hours.

Furegrelate (previously known as U-63557A), a selective orally active thromboxane synthase inhibitor, with potential for the treatment of various diseases including hypertension, thrombosis, and renal disorders, arrhythmias, but these studies were discontinued.

Indoximod is an orally available Indoleamine 2,3-dioxigenase inhibitor. It shows higher potency in reversing IDO-mediated T cell suppression. Indoximod improves the efficacy of multiple chemotherapeutics agents and some immunological checkpoints mediators in Phase I/II clinical studies for metastatic breast cancer, metastatic melanoma, non-small cell lung cancer, primary malignant brain tumors, metastatic pancreatic cancer, as well as metastatic prostate cancer.

Ursulcholic acid is a soluble form of ursodeoxycholic acid. It is an anticholinergic agent.

Revatropate is a muscarinic antagonist with selectivity for M1 and M3 receptor subtypes. Significant improvement in airway function was shown in horses with heaves after inhalation of revatropate, and it was found to be a safe and effective bronchodilator. Early clinical studies in chronic obstructive airway disease (COAD) patients also showed that inhaled revatropate was an effective bronchodilator, and well tolerated.

Fostedil (KB-944) is a phosphonic acid derivative with potent vasodilator activity. KB-944 has been demonstrated to produce long lasting coronary vasodilator and hypotensive effects in conscious and anesthetized dogs; increase coronary blood flow in isolated, blood perfused heart preparations of dogs; and reduce systemic pressure in conscious normotensive and hypertensive rats. Slow channel calcium entry blockade is thought to contribute to the vasodilator activity of KB-944. Fostedil is longer acting in hypertensive animals than either nifedipine or diltiazem suggesting a potential clinical advantage for this compound. Unexpectedly, fostedil was shown to produce atrial fibrillation in 3 of 10 hypertensive patients in a placebo controlled study. Fostedil had been in phase II clinical trials for the treatment of angina pectoris. However, this research has been discontinued.

Carbocloral is a carbamate ester derivative used as sedative and hypnotic drug. Carbocloral is as effective as chloral hydrate in producing sedation, hypnosis, and general anesthesia, and more effective in inducing relaxation of skeletal muscles. Carbocloral was also more effective as an anticonvulsant and less toxic than chloral hydrate.

Potassium guaiacolsulfonate also known as sulfoguaiacolum is a salt of GUAIACOLSULFONIC ACID, which is used as an expectorant, to relieve symptoms of cough and mucus in the chest due to respiratory infections, asthma, colds, or hay fever. It works by thinning mucus (phlegm) in the lungs, making it less sticky and easier to cough up. This reduces chest congestion by making coughs more productive.