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Androstanolone

Also known as: Stanolone, Dihydrotestosterone, 5α-Dihydrotestosterone, Androstanolone, Anaboleen, Anabolex, Anaprotin, Andractim, Androlone, Neodrol, Protona, Stanaprol, Stanorone, 5α-Androstan-17β-ol-3-one, 17β-Hydroxy-5α-androstan-3-one, (5α,17β)-17-Hydroxyandrostan-3-one, 4-dihydrotestosterone, 17β-Hydroxy-5α-androstane-3-one, 17beta-Hydroxy-3-androstanone, Androstan-3-one, 17-hydroxy-, (5α,17β)-

Androstanolone (CAS 521-18-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C19H30O2 and a molecular weight of 290.440 g/mol. Key properties include a melting point of 178-183 °C, a boiling point of 413.1±38.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 176.4±19.4 °C. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H301 — Toxic if swallowed and H311 — Toxic in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
521-18-6
Jingsj CID
J-1510417-3
Molecular Formula
C19H30O2
Molecular Weight
290.440 g/mol
Category
Organic Compounds
Last updated
8/21/2026
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Physicochemical Properties

Melting Point178-183 °C
Boiling Point413.1±38.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point176.4±19.4 °C
Exact Mass290.224579
PSA37.30000
LogP3.75
Vapor Pressure0.0±2.2 mmHg at 25°C
Refractive Index1.536

GHS Safety & Compliance

Flammable / Acute Toxicity / Health HazardSignal word: Danger
  • H225 — Highly flammable liquid and vapour
  • H301 — Toxic if swallowed
  • H311 — Toxic in contact with skin
  • H331 — Toxic if inhaled
  • H370 — Causes damage to organs

Frequently Asked Questions

What is the CAS number of Androstanolone?

The CAS number of Androstanolone is 521-18-6.

What are the molecular formula and molecular weight of Androstanolone?

Androstanolone has molecular formula C19H30O2 and molecular weight 290.440 g/mol.

Is Androstanolone hazardous?

Androstanolone has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H301 — Toxic if swallowed; H311 — Toxic in contact with skin.

What are the upstream and downstream products of Androstanolone?

For Androstanolone, Upstream Products: 5α-Androstanedione, Testosterone; Downstream Products: Epiandrosterone, Androsterone, 5α-Androstanedione.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Androstanolone (CAS 521-18-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1510417-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.