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Equilenin

Also known as: (+)-Equilenin, EQU, Equilenina, D-Equilenin, d-Equilenin, 6,8-didehydroestrone, estra-1,3,5(10),6,8-pentaen-3-ol-17-one, 3-hydroxyestra-1,3,5(10),6,8-pentaen-17-one, 3-hydroxyoestra-1,3,5(10),6,8-pentaen-17-one, D-1,3,5(10),6,8-ESTRAPENTAEN-3-OL-17-ONE

Equilenin (CAS 517-09-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C18H18O2 and a molecular weight of 266.33400 g/mol. Key properties include a melting point of 258-259°, a boiling point of 472.6ºC at 760mmHg, a density of 1.242g/cm3 and a flash point of 200.9ºC. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H302 — Harmful if swallowed and H312 — Harmful in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
517-09-9
Jingsj CID
J-1439558-5
Molecular Formula
C18H18O2
Molecular Weight
266.33400 g/mol
Category
Ketones
Last updated
8/21/2026
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Physicochemical Properties

Melting Point258-259°
Boiling Point472.6ºC at 760mmHg
Density1.242g/cm3
Flash Point200.9ºC
Exact Mass266.13100
PSA37.30000
LogP3.94440
Refractive Index1.662

GHS Safety & Compliance

Flammable / IrritantSignal word: Danger
  • H225 — Highly flammable liquid and vapour
  • H302 — Harmful if swallowed
  • H312 — Harmful in contact with skin
  • H319 — Causes serious eye irritation
  • H332 — Harmful if inhaled

Frequently Asked Questions

What is the CAS number of Equilenin?

The CAS number of Equilenin is 517-09-9.

What are the molecular formula and molecular weight of Equilenin?

Equilenin has molecular formula C18H18O2 and molecular weight 266.33400 g/mol.

Is Equilenin hazardous?

Equilenin has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H302 — Harmful if swallowed; H312 — Harmful in contact with skin.

What are the upstream and downstream products of Equilenin?

For Equilenin, Upstream Products: Equilin, Nandrolone; Downstream Products: Estrone.

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

Last updated:

How to cite: Jingsj. "Equilenin (CAS 517-09-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1439558-5 (accessed 2026-11-06).

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