Retinyl propionate is a synthetic derivative of a Vitamin A. Upon topical application, retinyl propionate is hydrolyzed by esterases to retinol, which is ultimately converted to retinoic acid. In mouse models, retinyl propionate induced epidermal thickening in mouse tail and promoted collagen formation in UV-irradiated mice. These results encouraged clinical trials of retinyl palmitate against photoaging. Topical retinyl propionate cream (0.15%) did not demonstrate any statistically significant improvement over placebo, but in later studies of combinations of retinyl propionate with climbazole or niacinamide improvements in the appearance of fine lines, wrinkles and age spots were demonstrated.

Testosterone valerate, or testosterone pentanoate, is a synthetic, steroidal androgen. It is a short-to-medium duration C17β valerate ester of testosterone, with a terminal half-life of approximately twice that of the short-acting testosterone propionate. Testosterone valerate is available exclusively as a component of the veterinary drug Deposterona developed by Syntex Animal Health Company, which is marketed in Mexico. Deposterona also contains testosterone acetate and testosterone undecanoate and is used to treat impotence, weakness, fatigue and hypogonadism in male breeding animals (cows, pigs, canines, sheep), as well as a general protein-sparing anabolic. It is administered via intramuscular injection and acts as a long-lasting prodrug of testosterone. Esterified forms of testosterone are designed to prolong the window of therapeutic effect following administration, allowing for less frequent injection schedule compared to injections of unesterified steroid. Deposterona is also used for bodybuilding purposes in men and not recommended for women performance-enhancing purposes due to its strong androgenic nature, side effects, and slow-acting characteristics (making blood levels difficult to control). Deposterona is only known to be manufactured in Mexico. Because it contains a low concentration of steroid,this product is not in high demand, and not readily diverted for illicit sale.

Testosterone acetate, a testosterone ester, is an androgen. It is a steroid lipid molecule considered to be practically insoluble (in water) and basic. It is an anabolic steroid and testosterone prodrug. Testosterone acetate has a faster rate of absorption in the body then other esters. In combination with two other testosterone esters, testosterone valerate and testosterone undecanoate, it is a part of Deposterona, an injectable veterinary blend steroid preparation marketed in Mexico. With its blend of slow and fast-acting esters, Deposterona is essentially a low dosed alternative to Sustanon and is used primarily to treat impotence, weakness, fatigue, and hypogonadism in male breeding animals (cows, pigs, canines, and sheep), and also as a general protein-sparing anabolic. Testosterone acetate is classified as a Schedule III drug by the United States Drug Enforcement Agency and is only legal with a prescription due to his potential for misuse and abuse.