Siratiazem [LRA 113] is a calcium channel antagonist that is structurally similar to diltiazem but has a branched alkyl group on the basic nitrogen. Siratiazem has been developed in an attempt to limit the in vivo N-demethylation that is known to occur with diltiazem. Preliminary binding and functional studies in cardiac and vascular tissues indicate that it not only binds to diltiazem binding sites but also exhibits Ca2+ channel blocking properties comparable to diltiazem. Siratiazem has a similar profile of activity to its parent compound, diltiazem, in that it blocks calcium channels in vascular, intestinal smooth muscle and cardiac tissue, and is least potent in cardiac muscle. At higher concentrations, siratiazem may also block cardiac sodium channels.

Ambamustine (PTT-119) is a bifunctional alkylating agent. Its antitumour effect is reported to mainly be through alkylation and interstrand cross-linkage of DNA. The drug was awaiting registration in Italy for the treatment of non-Hodgkin's lymphoma, and was also in phase-II clinical trial for small cell lung cancer, but was discontinued.

Brosuximide is longer-lasting anticonvulsant that has been studied as an antiepileptic drug.

Brovanexine is a derivative of bromhexine used as an adjunct to antibacterials in preparations for the treatment of respiratory-tract infections. Oral administration of brovanexine hydrochloride (BR-222) caused a significant increase in the output volume of respiratory tract fluid. Brovanexine at 10 and 20 mg/kg showed a tendency to reduce the viscosity of respiratory tract fluid in anesthetized dogs. Brovanexine also showed a tendency to reduce the viscosity of sputum obtained from the SO2-exposed rabbits.

FEPENTOLIC ACID is a choleretic agent.

Etanterol (VAL 481), a phenethanolamine derivative, is a β2 adrenoceptor agonist that was undergoing phase II trials in Italy as a bronchodilator with Valeas.

Levonantradol is a synthetic cannabinoid analogue of delta (9)-tetrahydrocannabinol (delta(9)-THC) administered intramuscularly. It has antiemetic and anti-analgesic properties. Although its precise mechanism of action is unknown, levonantradol appears to bind and activate the cannabinoid receptors CB1 and/or CB2. Antiemetic effect of levonantradol significantly superior to chlorpromazine. However, its adverse central effects limit its utility. The main adverse events are drowsiness and dizziness. Levonantradol, administered intramuscularly to the patients suffering from postoperative pain, manifested significant analgesic efficacy. Analgesia persisted for more than 6 h with the 2.5 and 3 mg doses of levonantradol. Drowsiness was frequent but few other psychoactive effects were reported.

ISOMETAMIDIUM (as a chloride salt) is widely used in tropical countries as an antiprotozoal agent to control animal trypanosomiasis. It is used principally in cattle but also in sheep, goats, buffalos, donkeys, horses, camels and dogs.

BROTIANIDE is salicylanilide derivative used to treat fascioliasis in sheep. A dose of 7 mg/kg of brotianide shows 91-99% activity against 7-14 weeks old flukes; however, its activity against 6 weeks old flukes is weak (50-90%). It also possesses 85-90% activity against paramphistomes in sheep and cattle. The maximum tolerated dose of brotianide is 27 mg/kg in sheep.

Oxoprostol was developed as a gastric acid secretion inhibitor. Information about the further development of this drug is not available.