Dexpramipexole (also known as KNS-760704/R-pramipexole) was originally developed by University of Virginia researchers to treat Amyotrophic Lateral Sclerosis and then was licensed to global biotechnology company Biogen Idec for further development. However, on phase III clinical trial the study of this drug was discontinued. Biogen said the drug neither slowed the loss of muscle function nor prolonged the lives of patients with ALS, often called Lou Gehrig’s disease. Nor did it show any efficacy in secondary endpoints of the clinical trial, or work in any sub-group of patients—about a big a failure as a company could have a Phase III trial. In addition, was discovered, that dexpramipexole was able to bind to beta-subunit of the mitochondrial F1/FO ATP synthase complex and increased its activity, thus reduced ischemic brain injury. These findings, together with the excellent brain penetration and favorable safety profile in humans, make dexpramipexole a drug with realistic translational potential for the treatment of stroke.

Erbumine (tert-butylamine) is a colorless liquid with an ammonia-like odor. It is used in the preparation of insecticides, pharmaceuticals, oil additives, and rubber accelerators. It neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated in combination with strong reducing agents, such as hydrides.

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.

Piprocurarium is a curarimimetic. It is antagonized by neostigmine. Piprocurarium is strongly vagolytic, producing tachicardia. Its duration of action is shorter than that of d-tubocurare and longer than that of succinylcholine. Piprocurarium is not hypotensive, is only slightly histaminogenic, is nonirritating to the veins, and can be mixed with all the anesthetic drugs. Piprocurarium has been offered for clinical trial as a brief-acting, nondepolarizing neuromuscular blocking drug. The drug appears to be anything but short acting. A persistent tachycardia and elevation in systolic and diastolic pressure invariably follows its intravenous injection. Alarming electrocardiographic changes occur, characterized by AV dissociation, depression of the ST segment, supraventricular tachycardia and, at times, inversion of the T waves. In view of these circulatory effects, it is doubtful that the drug will be useful clinically.

Fosfocreatinine, a cardioprotectant that was used for the treatment of cardiac disorders. Information about the current use of this drug is not available.

Cesium Cation CS-131 is an unstable radioisotope of cesium (Cs) with radiocytotoxic application. Cs-131 is a gamma photon-emitting radionuclide with high energy and a relatively short half-life of 9.7 days. Intraoperative cesium-131 (Cs-131) brachytherapy performed at the time of neurosurgical resection may represent an excellent salvage treatment option.

Gluceptate sodium also known as sodium glucoheptonate (H-Quest A300) is a non-toxic, a non-hazardous chelating agent, which forms stable complexes with di- and trivalent metal ions such as Ca2+, Fe2+, Fe3+, Al3+, etc. This substance is highly compatible with strong alkaline mediums and can prevent the bacterial degradation of the solution. Gluceptate sodium has various applications in water treatment, agricultural, cosmetics, textile processing and in some others fields.

Moxastine is a diarylmethane derivative with an antihistamine and anticholinergic activities.

Encaleret (JTT-305 or MK-5442) is a potent oral short-acting calcium-sensing receptor (CaSR) antagonist and transiently stimulates endogenous parathyroid hormone (PTH) secretion. CaSR antagonists stimulate endogenous PTH secretion through CaSR on the surface of parathyroid cells and thereby may be anabolic agents for osteoporosis. Japan Tobacco and Merck were developing encaleret for the treatment of osteoporosis however development has been discontinued.