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Methylene boldenone

Also known as: 17β-Hydroxy Exemestane, Exemestane 17β-Hydroxy Impurity, Exemestane EP Impurity H, (17β)-17-Hydroxy-6-methyleneandrosta-1,4-dien-3-one, (8R,9S,10R,13S,14S,17S)-17-hydroxy-10,13-dimethyl-6-methylidene-8,9,11,12,14,15,16,17-octahydro-7H-cyclopenta[a]phenanthren-3-one, Androsta-1,4-dien-3-one, 17-hydroxy-6-methylene-, (17β)-

Methylene boldenone (CAS 122370-91-6) 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 134-136ºC, a boiling point of 454.9±45.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 193.7±21.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
122370-91-6
Jingsj CID
J-1369998-4
Molecular Formula
C20H26O2
Molecular Weight
298.419 g/mol
Category
Ketones
Last updated
8/21/2026
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Physicochemical Properties

Melting Point134-136ºC
Boiling Point454.9±45.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point193.7±21.3 °C
Exact Mass298.193268
PSA37.30000
LogP3.65
Vapor Pressure0.0±2.5 mmHg at 25°C
Refractive Index1.581

Frequently Asked Questions

What is the CAS number of Methylene boldenone?

The CAS number of Methylene boldenone is 122370-91-6.

What are the molecular formula and molecular weight of Methylene boldenone?

Methylene boldenone has molecular formula C20H26O2 and molecular weight 298.419 g/mol.

What are the upstream and downstream products of Methylene boldenone?

For Methylene boldenone, Upstream Products: Formaldehyde, Boldenone; Downstream Products: Exemestane, (8R,9S,10R,13S,14S)-10,13-Dimethylspiro[androsta-1,4-diene-6,2'-oxirane]-3,17-dione.

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

Last updated:

How to cite: Jingsj. "Methylene boldenone (CAS 122370-91-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1369998-4 (accessed 2026-11-09).

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