Tisocalcitate is the vitamin D derivative. Tisocalcitate ointment is currently in phase 2 clinical development for mild to moderate psoriasis. Early studies have shown that, unlike other vitamin D3 analogues, tisocalcitate does not affect calcium metabolism. Tisocalcitate ointments were tolerated well and were safe to use on healthy skin. Tisocalcitate had been in phase II clinical trial for the treatment of psoriasis. However, this development was discontinued.

Linarotene is arotinoid derivative. It is an antikeratolytic agent. Linarotene had been in preclinical phase by Ortho Pharmaceutical (Johnson & Johnson) and BASF Pharma for the treatment of skin disorders. However, this research was discontinued.

Becocalcidiol is a vitamin D analog participated in phase II clinical trials as a topical treatment for psoriasis. Therapy was safe and well tolerated, however further studies were discontinued.

Lexacalcitol (KH1060) is over 100 times more active than 1alpha,25-dihydroxyvitamin D3 and is of potential interest in the treatment of psoriasis and other diseases characterized by accelerated cell growth and T lymphocyte activation, which was studied in the clinical trial. KH1060 also prevents type I diabetes in the preclinical investigation without significant effects on calcium or bone metabolism. In addition also was shown that neuroblastoma (NB) cell lines were more susceptible to growth inhibition by KH1060, suggesting its possible use in NB to potentiate the action of retinoids, which are in clinical use for this disease. The underlying biochemical reasons for the increased biological activity of KH1060 are unknown, but it can include 1) metabolic considerations in addition to explanations based upon 2) enhanced stability of KH1060-liganded transcriptional complexes.

Atocalcitol is a vitamin D analogue. A hallmark of vitamin D3 analogues in psoriasis amelioration is the ability to inhibit the proliferation of keratinocytes. Atocalcitol had been in phase II clinical trials for the treatment of psoriasis. However, this research has been discontinued.

Seocalcitol (EB 1089) is a vitamin D analog, and agonist of the vitamin D receptor. Antineoplastic activity of seocalcitol was tested in clinical trials against hepatocellular carcinoma, pancreatic, breast and colorectal cancer. Due to inconsistent results of clinical trials, development of seocalcitol was discontinued by Leo Pharma.

Tiapirinol is a thiazine derivative patented by Tanabe Seiyaku Co., Ltd. as a low toxic compound useful to prevent hypohepatia. In acute toxicity tests on mice, the toxicity of Tiapirinol is lower than that of pyridoxal phosphate and other vitamin B6 derivative. Tiapirinol showed vitamin B6 activity approximately equivalent to that of pyridoxal phosphate or pyridoxine for the growth of vitamin B6 deficient rats and also for the convulsions caused by antivitamin B6 agents.

Doretinel is a member of a class of compounds known collectively as retinoids. As a topical gel, it was being studied for its potential use as a dermatological product.