A peptide CAS number identifies a registered substance, but it does not encode sequence, purity, biological activity or clinical evidence. Accurate peptide references need several additional identity fields.
MOTS-c acetate is a salt form of a 16-amino-acid mitochondrial-derived peptide studied in metabolic-stress signaling. Most intervention evidence remains preclinical, while human studies largely concern naturally produced MOTS-c rather than an administered product.
A polypeptide is a chain of amino acids connected by peptide bonds. Its sequence, folding, chemical modifications, and assembly determine whether it becomes part or all of a functional protein.