Oxandrolone Research Reference

Catalog classification, reference sizes, lab math links, and source-backed data. Educational use only — not medical advice.

Researched for: Vendor-neutral scientific reference catalog entry for oxandrolone.

anabolic-androgenic steroid compound Reference verified

Also known as: Anavar, Oxandrin, Lonavar, Vasorome, Oxandrolonum, 17β-hydroxy-17α-methyl-2-oxa-5α-androstan-3-one

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Quick Facts

Reference Sizes
2.5 mg tablet, 10 mg tablet
Storage
For labeled oxandrolone tablets: store at 20–25°C (68–77°F), USP controlled room temperature.

Catalog Description

Oxandrolone is a synthetic 17α-alkylated anabolic-androgenic steroid and androgen-receptor ligand. Its molecular formula is C19H30O3 and its molecular weight is 306.4 g/mol. United States labeling describes oral oxandrolone tablets in 2.5 mg and 10 mg strengths.

Catalog descriptions reflect research context only. Not a medical claim or treatment recommendation.

Research Profile

Half-Life
Terminal elimination half-life is approximately 9-10 hours in adults (somewhat longer, around 13 hours, in geriatric populations), following an initial distribution phase of roughly 30 minutes.
Onset
A clinical onset time is not established as a general reference parameter. In a pharmacokinetic study, median time to peak plasma concentration after oral administration was approximately 1 hour.
Administration Routes (Research)
oral

Reported Research Effects

Data source: Primary literature, regulator records, trial registries, and identity-specific evidence search

Reflects preclinical/research literature context only. Not a medical claim, dosing instruction, or treatment recommendation.

Research Notes

The United States product label describes adult oral total daily doses of 2.5–20 mg administered in 2–4 divided doses for labeled indications, with treatment courses commonly described as 2–4 weeks; these are historical/product-label reference data and not dosing recommendations. Oxandrolone has also been investigated in catabolic states and burn-related muscle-wasting contexts.

Supplementary research context only. Not medical advice or a treatment recommendation.

Registry Identifiers

CAS 53-39-4; PubChem CID 5878; molecular formula C19H30O3; molecular weight 306.4 g/mol; UNII 7H6TM3CT4L; InChIKey QSLJIVKCVHQPLV-PEMPUTJUSA-N

Source-Backed Observations

Oxandrolone is classified as an anabolic steroid and a United States DEA Schedule III controlled substance. The official product label includes warnings concerning hepatic effects, lipid changes, virilization, and other androgenic-anabolic steroid risks.

Reflects published research. Educational reference — not a recommendation for use.

Sources

Oxandrolone tablet: official drug label
https://dailymed.nlm.nih.gov/dailymed/lookup.cfm?setid=a6f42739-5bfc-4b76-8795-e93fa58f3d29 (accessed 2026-09-15)
Oxandrolone, CID 5878
https://pubchem.ncbi.nlm.nih.gov/compound/5878 (accessed 2026-09-15)
Stability of Oxandrolone in Medium-Chain Triglyceride Oil and Pharmacokinetics Following Buccal Administration of the Extemporaneous Formulation in Neonates and Adults
https://pmc.ncbi.nlm.nih.gov/articles/PMC7134583/ (accessed 2026-09-15)

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Research Use Only. All content is for educational and research reference only. Not medical advice, a treatment recommendation, or guidance on human use. Compounds are not FDA-approved drugs unless specifically noted.

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