Testosterone Propionate’s details and information were first published and released in 1935 as a result of various methods to determine the best possible manner of maximizing the uses of Testosterone itself, because as mentioned above, Testosterone un-esterified possesses a very short half-life. Shortly afterwards, Schering AG (located in Germany) began manufacturing and releasing on the market the very first Testosterone Propionate product under the trade name Testoviron, which is to this day still a very popular brand name. Testosterone Propionate was the very first esterified variant of Testosterone to ever be created, and is the oldest used esterified form of Testosterone dating back to the mid-1930s. Because of this, vast amounts of Test-Prop 100 (Testosterone Propionate) was found among the prescription drug market in the United States, and was the most widely utilized form of Testosterone in the world until the 1960s. During the 1950s, Testosterone Propionate was but only one of 3 available anabolic steroids in existence (Testosterone suspension, Testosterone Propionate, and Methyltestosterone). Today there exist hundreds of anabolic steroid analogues. A little known fact as well is that Test-Prop 100 (Testosterone Propionate) was also developed into a buccal and sublingual format that was not very popular and subsequently discontinued during the 1980s. Sublingual and buccal forms are tablets designed to be absorbed by the mucous membranes under the tongue (sublingual) as the tablet dissolves or by the mucous membranes between the surface of the gums and the cheek/lip.