Anavar (Oxandrolone) Chemical Names: 5α -ANDROSTAN-2-OXA-17α -METHYL-17β -OL-3-ONE Formula: C19 H30 O3 Molecular Weight: 306.44 CAS#: 53-39-4 Ref. Standard: USP30 Description: White Crystalline Powder Rotation: -18~-24° Assay: 98%~100.5%