Winstrol, Anavar or Dianabol

If you are researching oral androgens, these three are the usual starting points. All are 17α-alkylated so they survive first-pass metabolism — which is also why their half-lives are measured in hours, not days. Beyond that, they are quite different molecules.

Side by side

Property	Winstrol	Anavar	Dianabol
Compound	Stanozolol	Oxandrolone	Methandrostenolone
Molecular weight	≈ 328 g/mol	≈ 306 g/mol	≈ 300 g/mol
Est. half-life	≈ 9 h	≈ 9–12 h	≈ 3–5 h
Vial / form	10 mg tablets	10 mg tablets	10 mg tablets
CAS	10418-03-8	53-39-4	72-63-9

What each is referenced for

Winstrol (stanozolol) is the 17α-alkylated pyrazole derivative, commonly seen in SHBG-binding research and nitrogen-retention models. Its molecular weight is higher than the other two, which shows up if you convert mass to molar amounts.

Anavar (oxandrolone) is referenced for its high anabolic-to-androgenic ratio — it’s the compound people cite when a protocol wants to minimize androgenic side effects while keeping protein-synthesis research going. The half-life estimate sits around 9–12 hours.

Dianabol (methandrostenolone) is the classic benchmark. Its short 3–5 hour half-life makes it the fastest-clearing of the three, and it’s widely used as a reference standard in analytical chemistry and receptor binding work.

Dosing math

Because half-lives are in hours, oral protocols dose daily or split the tablet across the day. All three ship as 10 mg tablets, so a 20 mg/day protocol is two tablets. There is no reconstitution step for orals — but the molecular weight calculator is useful when a research method calls for molar concentrations, and the dilution calculator covers the ethanol-oil solubility work.

Practical notes

Tablets are stored at room temperature and are ethanol/oil soluble. We’ve had researchers ask whether orals can be micronized for solution work — some protocols do dissolve them in ethanol for dosing accuracy, which is exactly where the dilution math comes in. Check the solubility line on each product page: Winstrol, Anavar, Dianabol.

For laboratory research use only. Not medical advice.