A summary of the most common chemical descriptors (InChI Key and SMILES codes) for 4-Methyl-2-Nitrophenol are summarized together with 3D and 2D structures and relevant physico-chemical properties.

What is the 4-Methyl-2-Nitrophenol?

The molecule 4-Methyl-2-Nitrophenol presents a molecular formula of C7H7NO3 and its IUPAC name is 4-methyl-2-nitrophenol.

A molecule of 4-methyl-2-nitrophenol (4-M2NP) is a synthetic organic compound that is used as an intermediate in the production of dyes, pigments, and other chemicals. It is a colorless solid that is soluble in organic solvents and has a melting point of 122-123 °C. 4-M2NP is a member of the class of nitrophenols, which are aromatic compounds that contain a nitro group (-NO2) attached to a phenyl group. The nitro group is electron-withdrawing and causes the molecule to be slightly acidic (pKa = 4.75). The molecule has two chiral centers (at C-2 and C-4) and can exist in four different stereoisomeric forms. The most common form of 4-M2NP is the cis isomer, which has the two nitro groups on the same side of the molecule..

3D structure

Cartesian coordinates

Geometry of 4-Methyl-2-Nitrophenol in x, y and z coordinates (Å units) to copy/paste elsewhere. Generated with Open Babel software.

2D drawing


4-Methyl-2-Nitrophenol SYDNSSSQVSOXTN-UHFFFAOYSA-N chemical compound 2D structure molecule svg


Molecule descriptors

IUPAC name4-methyl-2-nitrophenol
InChI codeInChI=1S/C7H8N2O2/c1-5-2-3-6(8)4-7(5)9(10)11/h2-4H,8H2,1H3

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.

Reference codes for other databases

There exist several different chemical codes commonly used in orded to identify molecules:

Physico-Chemical properties

IUPAC name4-methyl-2-nitrophenol
Molecular formulaC7H7NO3
Molecular weight153.135
Melting point (ºC)35
Boiling point (ºC)-
Density (g/cm3)1.240
Molar refractivity42.25
Topological polar surface area71.8

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.