2-mercaptoacetic acid methyl ester

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

What is 2-mercaptoacetic acid methyl ester?

The molecule 2-mercaptoacetic acid methyl ester presents a molecular formula of C3H6O2S and its IUPAC name is methyl 2-sulfanylethanoate.

3D structure

Cartesian coordinates

Geometry of 2-mercaptoacetic acid methyl ester in x, y and z coordinates (Å units) to copy/paste elsewhere. Generated with Open Babel software.

2D drawing


2-mercaptoacetic acid methyl ester MKIJJIMOAABWGF-UHFFFAOYSA-N chemical compound 2D structure molecule svg
2-mercaptoacetic acid methyl ester


Molecule descriptors

IUPAC name2-mercaptoacetic acid methyl ester
InChI codeInChI=1S/C3H6O2S/c1-5-3(4)2-6/h6H,2H2,1H3

Physico-Chemical properties

IUPAC namemethyl 2-sulfanylethanoate
Molecular formulaC3H6O2S
Molecular weight106.15
Melting point (ºC)
Boiling point (ºC)
Density (g/cm3)
Molar refractivity
Topological polar surface area27.3

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.