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Syntex. Laboratorios Syntex SA (later Syntex Laboratories, Inc.) was a pharmaceutical company formed in Mexico City in January 1944 by Russell Marker, Emeric Somlo, and Federico Lehmann to manufacture therapeutic steroids from the Mexican yams called cabeza de negro ( Dioscorea mexicana) and Barbasco ( Dioscorea composita ). [1]
Metandienone, also known as 17α-methyl-δ 1-testosterone or as 17α-methylandrost-1,4-dien-17β-ol-3-one, is a synthetic androstane steroid and a 17α-alkylated derivative of testosterone. It is a modification of testosterone with a methyl group at the C17α position and an additional double bond between the C1 and C2 positions. [7]
Anabolic steroids, also known as anabolic-androgenic steroids (AAS), are a class of drugs that are structurally related to testosterone, the main male sex hormone, and produce effects by binding to the androgen receptor (AR). Anabolic steroids have a number of medical uses, [1] but are also used by athletes to increase muscle size, strength ...
Mesterolone. Mesterolone, sold under the brand name Proviron among others, is an androgen and anabolic steroid (AAS) medication which is used mainly in the treatment of low testosterone levels. [2] [3] It has also been used to treat male infertility, although this use is controversial. [2] [4] [5] It is taken by mouth.
Russell Earl Marker (March 12, 1902 – March 3, 1995) was an American chemist who invented the octane rating system when he was working at the Ethyl Corporation. Later in his career, he went on to found a steroid industry in Mexico when he successfully made semisynthetic progesterone from chemical constituents found in Mexican yams in a process known as Marker degradation.
Trenbolone is an androgen and anabolic steroid (AAS) of the nandrolone group which itself was never marketed. [clarification needed] Trenbolone ester prodrugs, including trenbolone acetate (brand names Finajet, Finaplix, others) and trenbolone hexahydrobenzylcarbonate (brand names Parabolan, Hexabolan), are or have been marketed for veterinary and clinical use.
Fluoxymesterone. Fluoxymesterone, sold under the brand names Halotestin and Ultandren among others, is an androgen and anabolic steroid (AAS) medication which is used in the treatment of low testosterone levels in men, delayed puberty in boys, breast cancer in women, and anemia. [1] It is taken by mouth.
The medication is a naturally occurring androgen and anabolic steroid and hence is an agonist of the androgen receptor (AR), the biological target of androgens like testosterone and DHT. [2] [6] Androstanolone was discovered in 1935 and was introduced for medical use in 1953. [2] [7] [8] [9] It is used mostly in France and Belgium.