C4H9NO2S

C4H9NO2S is a chemical formula that represents multiple possible molecules, known as isomers. This is because the formula only specifies the number of atoms of each element (Carbon, Hydrogen, Nitrogen, Oxygen, and Sulfur) present in the molecule, but not the arrangement of those atoms. The number of possible arrangements results in different compounds, each with potentially distinct physical and chemical properties.

The most well-known compound sharing this formula is likely cysteine. Cysteine is an α-amino acid with the systematic name 2-amino-3-sulfanylpropanoic acid. It is a semi-essential proteinogenic amino acid, meaning that while humans can synthesize it, it may not always be produced in sufficient quantities, especially under certain physiological conditions. Cysteine contains a thiol (-SH) group, which makes it reactive and gives it unique chemical properties.

However, other isomers of C4H9NO2S exist. These isomers would have different arrangements of the carbon, hydrogen, nitrogen, oxygen, and sulfur atoms, leading to different structures and properties. Without further structural information, it's impossible to pinpoint a single, definitive molecule. Cysteine's prevalence and biological significance make it the most common association with this formula.

The presence of sulfur in the molecule, regardless of the specific isomer, often implies reactivity or involvement in redox reactions within biological systems. The exact properties of any specific C4H9NO2S molecule would depend on its specific structure and functional groups.