Butaprost, a structural analog of PGE2, is a selective agonist for the EP2 receptor subtype. EP2 receptors are expressed on human neutrophils and on respiratory, vascular, and uterine smooth muscle. Butaprost binds with about 1/10 the affinity of PGE2 to the recombinant murine EP2 receptor and does not bind appreciably to the other murine EP receptors or the DP, TP, FP, and IP receptors. Butaprost has frequently been used to pharmacologically define the EP receptor expression profile of various human and animal tissues and cells. Butaprost effectively reduces the subconjunctival scarring response. Given the significance of wound healing modulation in blebs, butaprost's inhibitory effect on subconjunctival Tenon's fibroblasts may be beneficial in managing postoperative scarring in glaucoma surgery.

Valdipromide is an antidepressant.

Shionogi developed S 777469 as a selective cannabinoid 2 receptor agonist for the atopic dermatitis treatment. This drug successfully completed phase II clinical trial, where was evaluate its safety and efficacy in patients with atopic dermatitis. However, information about the further development of S 777469 is not available.

Nitrazepate is the diazepam derivative. Nitrazepate is tranquiliser.

Clorindanic acid is a choleretic indanol derivative. Sterling Drug Inc. patented the compound in the 1960s. The compound is claimed to cause an increase in the rate of bile flow when administered to dogs. In rats, clorindanic acid was shown to have mild analgesic activity and hyperthermic effect.

Amicus Therapeutics was investigating afegostat (isofagomine; Plicera; HGT-3410; AT-2101), an orally available pharmacological chaperone molecule, which binds to glucocerebrosidase (Gba) and stimulates proper folding and trafficking of the enzyme, for the potential treatment of Parkinsons disease(PD) and Gaucher disease. Afegostat specifically and reversibly binds GCase in the ER with highaffinity; this stabilizes the active form of the enzyme in the ER and increases trafficking of GCase to lysosomes. In 2006, Orphan Drug designations were granted in the U.S. and E.U. in 2006 and 2007, respectively. However, this research has been discontinued.

Brivanib is a pyrrolotriazine-based compound and an inhibitor of vascular endothelial growth factor receptor-2 (VEGFR-2) with potential antineoplastic activity. It specifically targets and strongly binds to human VEGFR-2, a tyrosine kinase receptor and pro-angiogenic growth factor expressed almost exclusively on vascular endothelial cells. Blockade of VEGFR-2 by this agent may lead to an inhibition of VEGF-stimulated endothelial cell migration and proliferation, thereby inhibiting tumor angiogenesis. Brivanib has a moderate potency compared to VEGFR-2 against VEGFR-1 and FGFR-1 as well. Brivanib is suggested to be efficient in treatment of hepatocellular carcinoma (HCC). As first-line and as second-line therapy brivanib demonstrated promising antitumor activity and a manageable safety profile in patients with advanced, unresectable HCC in phase II clinical trials. On 3 march 2011, orphan designation was granted by the European Commission to Bristol-Myers Squibb for brivanib alaninate for the treatment of hepatocellular carcinoma.[

Capravirine (S-1153, AG1549) is a 1,2,4,5-tetrasubstituted imidazole derivative patented by pharmaceutical company Shionogi as specific inhibitors of HIV-​1 reverse transcriptase. However, safety and efficacy studies showed that Capravirine had no specific advantages over currently used NNRTIs. Consequently, clinical trials were discontinued after phase IIb.

Clofenamic acid is a derivative of anthranilic acid, discovered by Parke-Davis. It possesses anti-inflammatory activity in the carrageenan-induced rat foot edema test.

Rivoglitazone hydrochloride (CS-011) is a thiazolidinedione-derivative peroxisome proliferator–activated receptor (PPAR)-γ agonist. It has been developed as potential treatment in type 2 diabetes mellitus and was shown to decrease plasma glucose and triglyceride levels in a dose-dependent manner in animals. Phase II and III clinical studies have assessed the efficacy and safety of rivoglitazone hydrochloride in patients with type 2 diabetes mellitus.