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.

Sodium aceneuramate is a sodium salt of aceneuramic acid (sialic acid). It is an effective inhalant expectorant. Inhalation of sodium aceneuramate repaired inflammation in the airway, and caused bronchitic rabbits to produce sputa with a low viscosity, similar to normal air-way secretions. Sodium aceneuramate protected the mucociliary transport impaired bycigarette smoke in a dose-dependent manner. The results suggest that sodium aceneuramate may participate in the defense mechanism in the airway against irritant gases. Sodium aceneuramate inhibited bronchial anaphylaxis and the release of histamine into bronchoalveolar lavages. Sodium aceneuramate has an action which elevates the viscoelasticity of secretions in the respiratory tract.

Lobucavir is a new anti-cytomegalovirus infection agent, manufactered by Bristol Myers Squibb, Inc. Lobucavir is a cyclobutyl analog of guanine with broad spectrum antiviral activity against most herpes viruses and Hepatitis B. Lobucavir was shown to inhibit herpes simplex virus (HSV) DNA polymerase after phosphorylation by the HSV thymidine kinase. The drug was well tolerated with few side effects. Lobucavir had been in phase III clinical trial for the treatment of Hepatitis B, Herpes simplex virus infections and in phase II for the treatment of Cytomegalovirus infections. All these studies were discontinued.

Clevudine F18 is a radioconjugate comprised of the synthetic pyrimidine analog clevudine (1-(2'-deoxy-2'-fluoro-beta-D-arabinofuranosyl)thymine, d-FMAU) labeled with the radioisotope fluorine F18. Upon administration, fluorine F18 clevudine is distributed and taken up by cells based on the rate of the cell’s DNA synthesis. The amount is then measured using positron emission tomography (PET). The compound is investigated as an imaging agent in prostate, breast cancers, and other malignant neoplasms.

Endrysone is a glucocorticoid with anti-inflammatory and antiallergic properties. It is used topically for skin conditions as an ophthalmic anti-inflammatory agent.

Tipredane is one of the compounds of a new series of sulfur-containing steroids synthesized at The Squibb Institute for Medical Research and is being developed for topical treatment of human dermatoses. Tipredane is structurally unique in that the classical l7-beta two-carbon side chain and the 17-alpha hydrogen of the steroid have been replaced by two alkylthio substituents. Tipredane has been shown to possess moderate to potent anti-inflammatory activity in various animal models, and to exhibit favorable separation of local anti-inflammatory activity from adverse systemic effects in both animals and humans. After oral administration, [3H]tipredane was rapidly absorbed, metabolized, and excreted into urine and feces. Metabolism of tipredane was rapid and complex, with significant species differences, although the disposition in rhesus and cynomolgus monkeys seemed to be similar to humans. Tipredane had been investigated as the therapeutic agent for the treatment of allergic rhinitis, asthma and skin disorders. However, this development was discontinued.

Dimesone is a synthetic glucocorticoid with anti-inflammatory and anti-allergic activity.

Gestaclone was developed as a progesterone receptor agonist; however, this compound has never been marketed. Information about the current use of this compound is not available.

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.