Lactic Acid, L-

**Semantic type:** Organic Chemical

**Definition:** The levorotatory isomer of lactic acid, the biologically active isoform in humans. Lactic acid or lactate is produced during fermentation from pyruvate by lactate dehydrogenase. This reaction, in addition to producing lactic acid, also produces nicotinamide adenine dinucleotide (NAD) that is then used in glycolysis to produce energy source adenosine triphosphate (ATP).

**Synonyms:** - (2S)-2-Hydroxypropanoic Acid - (S)-2-Hydroxypropanoic Acid - (S)-Lactic Acid - 2-Hydroxypropanoic Acid - L-Lactate - L-Lactic Acid - LACTIC ACID, L- - Lactate, L- - Lactic Acid - Milk Acid