Lactic acid contains a carbon atom from which a hydroxyl group (-OH) and a carboxylic group (-COOH) are joined along with a methyl group (-CH3). Lactic Acid has a molecular weight of 90.080 g/mol and is classified as alpha-hydroxy acid.
Lactic acid has many uses, particularly in medicines and foods. Excluding that, lactic acid is also used to coagulate protein in milk, for creating plastics, etc. It's produced naturally in the body muscles during exertion and may be prepared by synthetic and biotechnological methods.