This substance is created by bacteria when ethanol is oxidized twice in a
 fermentation-type process.
An iodinated version of this compound is used to reduce disulfide bridges during protein sequencing
 and to inhibit cysteine proteases. Its trifloro- version is a commonly used mobile phase in peptide HPLC.
 One process used to produce this process must suppress both the water-gas shift reaction and the
 production of propionic acid; that process uses an Iridium-III catalyst to carbonylate methanol. The
 anhydrous version of this compound is referred to as "glacial", and methods to produce it include the
 Cativa and Monsanto process. This substance is created by bacteria when ethanol is oxidized twice in a
 fermentation-type process. For 10 points, name this substance with formula CH3COOH, an organic acid
 that is the primary component of vinegar.
An iodinated version of this compound is used to reduce disulfide bridges during protein sequencing
 and to inhibit cysteine proteases.
{acetic} acid [or {acetate}]