Testosterone isocaproate is a type of synthetic testosterone that is attached to an isocaproate ester. This determines how the testosterone is delivered and how it travels through the body. Basic Info. CAS NO.: 15262-86-9 Molecular Formula: C25H38O3 Character: White crystalline powder Usage: Adrenal cortex hormone, anti-inflammatory, anti-drug and anti-allergic, Pharmaceutical material, Steroid hormone, Anabolin. As a male hormone and anabolic …