Carnitine

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** An amino acid derivative. Carnitine facilitates long-chain fatty acid entry into mitochondria, delivering substrate for oxidation and subsequent energy production. Fatty acids are utilized as an energy substrate in all tissues except the brain.

**Synonyms:** - (3-Carboxy-2-hydroxypropyl)trimethylammonium Hydroxide Inner Salt - DL-CARNITINE - DL-Carnitine - carnitine