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 EINECS: 239-307-1 Molecular Formula: C25H38O3 Assay: 99.5% Character: White crystalline powder. Usage: Adrenal cortex hormone, anti-inflammatory, anti-drug and anti-allergic,Pharmaceutical material, Steroid hormone, Anabolin. As a male hormone …