... bark extract: 1. Natural Yohimbe bark 2. Yohimbine:8% 3. Yohimbin HCl:98% 4. Red brown(8%) or white(98%) fine ... -19-0Molecular Formula: C21H26N2O3.HClMolecular Weight: 390.91Specification: Yohimbine: 8%, Yohimbin HCL: 98%Packing: Packed in paper-drums and two plastic ...