6-Methyleneandrost-4-ene-3,17-dione

Also known as: 1,2-Dihydro Exemestane, Exemestane EP Impurity E, Exemestane Related Compound A, 6-Methylene-4-androstene-3,17-dione, 6-Methyleneandrost-4-en-3,17-dione, 6-methylenandrost-4-ene-3,17-dione, 6-methylideneandrost-4-ene-3,17-dione, Androst-4-ene-3,17-dione, 6-methylene-

6-Methyleneandrost-4-ene-3,17-dione (CAS 19457-55-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C20H26O2 and a molecular weight of 298.419 g/mol. Key properties include a melting point of 164 °C(dec.), a boiling point of 450.8±45.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 168.0±25.7 °C. It is classified under GHS with signal word Warning and hazard statements H361 — Suspected of damaging fertility or the unborn child. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 19457-55-7
Jingsj CID: J-1040723-5
Molecular Formula: C₂₀H₂₆O₂
Molecular Weight: 298.419 g/mol
Category: Ketones
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point	164 °C(dec.)
Boiling Point	450.8±45.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	168.0±25.7 °C
Exact Mass	298.193268
PSA	34.14000
LogP	3.07
Vapor Pressure	0.0±1.1 mmHg at 25°C
Refractive Index	1.556

GHS Safety & Compliance

Health HazardSignal word: Warning

H361 — Suspected of damaging fertility or the unborn child

Frequently Asked Questions

What is the CAS number of 6-Methyleneandrost-4-ene-3,17-dione?

The CAS number of 6-Methyleneandrost-4-ene-3,17-dione is 19457-55-7.

What are the molecular formula and molecular weight of 6-Methyleneandrost-4-ene-3,17-dione?

6-Methyleneandrost-4-ene-3,17-dione has molecular formula C20H26O2 and molecular weight 298.419 g/mol.

Is 6-Methyleneandrost-4-ene-3,17-dione hazardous?

6-Methyleneandrost-4-ene-3,17-dione has GHS signal word Warning and hazard statements H361 — Suspected of damaging fertility or the unborn child.

What are the upstream and downstream products of 6-Methyleneandrost-4-ene-3,17-dione?

For 6-Methyleneandrost-4-ene-3,17-dione, Upstream Products: Formaldehyde, Androstenedione, diethoxymethane; Downstream Products: Exemestane.

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

Last updated: 8/21/2026

How to cite: Jingsj. "6-Methyleneandrost-4-ene-3,17-dione (CAS 19457-55-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1040723-5 (accessed 2026-11-09).

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