Winstrol Injectable Raw Steroid Powders Stanozolol 10418-03-8 Pharmaceutical Grade Quick Detail: 1. CAS No.: 10418-03-8 2. Molecular Formula: C21H32N2O 3. Molecular weight: 328.49 4. Appearance: White or almost white crystalline powder 5. Application: pharmaceutical grade 6. Usage: Winstrol is a steroid compound that is available as both an oral and injectable.