Ulobetasol propionate
Ulobetasol propionate, also known as halobetasol propionate and sold under the brand name Ultravate among others, is a synthetic glucocorticoid corticosteroid and a corticosteroid ester.
It was patented in 1975 and approved for medical use in 1990.

References
External links
"Halobetasol propionate". Drug Information Portal. U.S. National Library of Medicine.