Tamoxifen N-oxide

A summary of the most common chemical descriptors (InChI Key and SMILES codes) for Tamoxifen N-oxide are summarized together with 3D and 2D structures and relevant physico-chemical properties.

What is the Tamoxifen N-oxide?

The molecule Tamoxifen N-oxide presents a molecular formula of C26H29NO2 and its IUPAC name is 2-[4-[(Z)-1,2-diphenylbut-1-enyl]phenoxy]-N,N-dimethylethanamine oxide.

Tamoxifen N-oxide is a molecule that is produced when tamoxifen is metabolized in the body. Tamoxifen is a medication that is used to treat breast cancer. Tamoxifen N-oxide is thought to be less active than tamoxifen, but it is not known for sure if it is completely inactive..

3D structure

Cartesian coordinates

Geometry of Tamoxifen N-oxide in x, y and z coordinates (Å units) to copy/paste elsewhere. Generated with Open Babel software.

2D drawing


Tamoxifen N-oxide YAASNACECBQAFW-QPLCGJKRSA-N chemical compound 2D structure molecule svg
Tamoxifen N-oxide


Molecule descriptors

IUPAC name2-[4-[(Z)-1,2-diphenylbut-1-enyl]phenoxy]-N,N-dimethylethanamine oxide
InChI codeInChI=1S/C26H29NO2/c1-4-25(21-11-7-5-8-12-21)26(22-13-9-6-10-14-22)23-15-17-24(18-16-23)29-20-19-27(2,3)28/h5-18H,4,19-20H2,1-3H3/b26-25-

Other names (synonyms)

IUPAC nomenclature provides a standardized method for naming chemical compounds. Although this system is widely used in chemistry, many chemical compounds have also other names commonly used in different contexts. These synonyms can come from a variety of sources and are used for a variety of purposes.

One common source of synonyms for chemical compounds is the common or trivial names, assigned on the basis of appearance, properties, or origin of the molecule.

Another source of synonyms are historical or obsolete names employed in the past, however replaced nowadays by more modern or standardized names.

In addition to common and historical names, chemical compounds may also have synonyms that are specific to a particular field or industry.

  • (2-{4-[(1Z)-1,2-diphenylbut-1-en-1-yl]phenoxy}ethyl)dimethylamine oxide
  • 2-[4-[(Z)-1,2-diphenylbut-1-enyl]phenoxy]-N,N-dimethylethanamine oxide
  • 75504-34-6
  • Ethanamine, 2-(4-(1,2-diphenyl-1-butenyl)phenoxy)-N,N-dimethyl-, N-oxide, (Z)-
  • Q27132828
  • Tamoxifen N-oxide
  • Tamoxifen-N-oxide

Reference codes for other databases

There exist several different chemical codes commonly used in orded to identify molecules:
  • ZINC1849477
  • DTXSID101316463
  • CHEBI:63825
  • SCHEMBL4752564

Physico-Chemical properties

IUPAC name2-[4-[(Z)-1,2-diphenylbut-1-enyl]phenoxy]-N,N-dimethylethanamine oxide
Molecular formulaC26H29NO2
Molecular weight387.514
Melting point (ºC)
Boiling point (ºC)
Density (g/cm3)
Molar refractivity123.09
Topological polar surface area38.7

LogP and topological polar surface area (TPSA) values were estimated using Open Babel software.

The n-octanol/water partition coeficient (Kow) data is applied in toxicology and drug research. Kow values are used, to guess the environmental fate of persistent organic pollutants. High partition coefficients values, tend to accumulate in the fatty tissue of organisms. Molecules with a log(Kow) (or LogP) greater than 5 are considered to bioaccumulate.

TPSA values are the sum of the surface area over all polar atoms or molecules, mainly oxygen and nitrogen, also including hydrogen atoms.

In medicinal chemistry, TPSA is used to assess the ability of a drug to permeabilise cells.

For molecules to penetrate the blood-brain barrier (and act on receptors in the central nervous system), TPSA values below 90 Å2 are required. Thus, molecules with a polar surface area greater than 140 Å2 tend to be poorly permeable to cell membranes.