5-Aminolevulinic-13C2,15N Acid Hydrochloride Salt is the labeled form of 5-Aminolevulinic Acid Hydrochloride Salt (A611780), which is a naturally occurring amino acid; precursor of tetrapyrroles in the biosynthesis of chlorophyll and heme. Antineoplastic (photosensitizer).Also, it is derived from Acetic Acid-13C2 (A161562), which is the 13C labelled version of Acetic Acid, a weak acid, used as a reagent in numerous industrial processes.