R-(-)-O-Desmethylvenlafaxine

R-(-)-O-去甲-文拉法辛

Also known as: Desvenlafaxine R-Isomer, R-(-)-O-Desvenlafaxine, Venlafaxine O-Desmethyl R-Isomer, Desvenlafaxin R-Isomer-, Desvenlafaxine Impurity 1(R-Isomer), Effexor 21, Venlafaxine Impurity 21, 4-[(1R)-2-(dimethylamino)-1-(1-hydroxycyclohexyl)ethyl]phenol

R-(-)-O-Desmethylvenlafaxine (CAS 142761-11-3) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C16H25NO2 and a molecular weight of 263.37500 g/mol. It is also known as Desvenlafaxine R-Isomer, R-(-)-O-Desvenlafaxine and Venlafaxine O-Desmethyl R-Isomer. Key property: a melting point of 208-213ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
142761-11-3
Jingsj CID
J-1447784-5
Molecular Formula
C16H25NO2
Chinese Name
R-(-)-O-去甲-文拉法辛
Molecular Weight
263.37500 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point208-213ºC

Frequently Asked Questions

What is the CAS number of R-(-)-O-Desmethylvenlafaxine?

The CAS number of R-(-)-O-Desmethylvenlafaxine is 142761-11-3.

What are the molecular formula and molecular weight of R-(-)-O-Desmethylvenlafaxine?

R-(-)-O-Desmethylvenlafaxine has molecular formula C16H25NO2 and molecular weight 263.37500 g/mol.

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

Last updated:

How to cite: Jingsj. "R-(-)-O-Desmethylvenlafaxine (CAS 142761-11-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1447784-5 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.