Diprogulic acid (Dikegulac) is used as a precursor in vitamin C synthesis. It is plant growth regulator for hedges. Dikegulac is used to differentially kill terminal apices, and it analogously inhibits basic metabolic functions in dividing cells, but not stationary cells, in suspension culture. At the lowest concentrations, dikegulac partially suppresses division of the isolated tobacco protoplasts. Higher concentrations are required to produce visual cytoplasmic damage to the protoplasts, which probably first occurs at the level of the plasmalemma, as the vacuoles can be released intact. Later, tonoplast disruption occurs. It does not inhibit mature leaves.

Metynodiol, a progestin agent that has never been marketed.

Piflutixol is a thioxanthene neuroleptic which combines a very potent dopamine antagonistic effect with a potent effect in tests for sedative properties. It was found to have a very strong antagonistic effect against stereotypies induced by dopamine agonists in mice, rats and dogs as well as against apomorphine induced vomiting in dogs. This indicates that piflutixol must be considered as one of the most potent dopamine receptor blocking agents. Piflutixol seems to be the hitherto most potent inhibitor of dopamine-stimulated adenylate cyclase. There was a linear relationship between D-1 dopamine receptor occupation by [3H]piflutixol and inhibition of dopamine sensitive adenylate cyclase. Piflutixol markedly antagonizes the effect of noradrenaline, 5-HT and to some extent histamine, whereas the affinity for muscarinic receptors was rather weak. Piflutixol has a high affinity for dopamine structures within the brain. It is a compound with a very long duration of action.

Guamecycline, a tetracycline derivative was studied in patients with broncho-pulmonary diseases and for the treatment of acute pneumopathies. However, information about the current use of this compound is not available.

Pranolium (UM-272) is propranolol derivative. It can reduce the extent of myocardial injury sustained during severe ischemia. UM-272 lacks significant beta-adrenergic blocking activity but retains the negative chronotropic, negative inotropic and antiarrhythmic effects common to both d- and l-propranolol. The protective effects of UM-272 during myocardial ischemia cannot be due to metabolic effects of the beta-adrenergic blockade but may be due to effects on oxygen consumption or to effects on myocardial membrane properties that are related to its antiarrhythmic and myocardial depressant activity. The ability of UM-272 to enhance blood flow to subendocardial myocardium may also play a role in its beneficial effects during ischemia. UM-272 may protect the ischemic heart through direct effects on myocardial Ca++ regulating mechanisms. UM-272 has kinetically similar use-dependent inhibitory action of the fast sodium channels of cardiac muscles as other Class Ia antiarrhythmic drugs like quinidine or procainamide. Pranolium was investigated as an antiarrhythmic agent.

GALARUBICIN (DA-125) is an anthracycline derivative with anticancer activity, containing fluorine. The mechanism of action of this drug lies in inhibition of nucleic acid synthesis through intercalation with DNA. Because the structure and DNA-intercalating properties of DA-125 are similar to adriamycin, the cytotoxic effects of the two anthracyclines probably have similar biochemical mechanisms. Preclinical studies suggest that it may have greater activity and less cardiac toxicity than adriamycin. In a rodent study, administration of D-125 in higher dose levels (25 to 50 mg/kg) has been shown to result in testicular damage.

Metesculetol (permethol) is a vitamin P derivative. It increases capillary resistance and reduces membrane permeability. Permethol is for damaged gums and helps to stop gum bleeding, relieves inflammation and nourishes the gum tissues. It is used as a component of products for oral cavity care.

Praxadine is the anti-inflammatory and analgesic agent. Praxadine inhibited the activity of purified inducible NOS (iNOS), endothelial NOS (eNOS), and neuronal NOS (nNOS) isoforms to a similar extent.

Vesatolimod, also known as GS-9620, is being developed in clinical studies for the treatment of chronic hepatitis B viral (HBV) infection, with the goal of inducing a liver-targeted antiviral effect without inducing the adverse effects associated with current systemic interferon-α (IFN-α) therapies. It is demonstrate interferon-stimulated gene induction without detectable serum interferon at low oral doses. GS-9620 is a potent and oral agonist of Toll-like receptor-7, a pattern-recognition receptor whose activation results in innate and adaptive immune stimulation