Methyl Isopropyl Sulfide

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

What is the Methyl Isopropyl Sulfide?

The molecule Methyl Isopropyl Sulfide presents a molecular formula of C4H10S and its IUPAC name is methyl isopropyl sulfide.

Methyl isopropyl sulfide (MIS) is a molecule with the chemical formula C3H8S. It is a colorless, flammable gas with a characteristic odor. MIS is produced naturally in the environment by the breakdown of organic matter. It is also a by-product of the petroleum refining process..

MIS is used as a solvent and as a reagent in the production of other chemicals. It is also used as a fumigant, insecticide, and rodenticide..

MIS is a human health hazard. Exposure to high concentrations of MIS can cause irritation of the eyes, nose, and throat. Inhalation of MIS can also cause dizziness, headache, and nausea. Prolonged exposure to MIS can damage the liver, kidney, and nervous system..

MIS lies as a volatile organic compound (VOC). VOCs are regulated by the U.S. Environmental Protection Agency (EPA) and are monitored in the atmosphere by the EPA’s Air Quality Index (AQI)..

3D structure

Cartesian coordinates

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

2D drawing


Methyl Isopropyl Sulfide ROSSIHMZZJOVOU-UHFFFAOYSA-N chemical compound 2D structure molecule svg
Methyl Isopropyl Sulfide


Molecule descriptors

IUPAC namemethyl isopropyl sulfide
InChI codeInChI=1S/C4H4O2/c1-3-4(5)6-2/h1H,2H3

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 namemethyl isopropyl sulfide
Molecular formulaC4H10S
Molecular weight90.1872
Melting point (ºC)-102
Boiling point (ºC)85
Density (g/cm3)0.830
Molar refractivity28.93
Topological polar surface area26.3

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.