FMRFamide D Met Isomer, also known as FMRFamide D-Met-Ile-Phe-NH2, is a peptide hormone derived from the proprotein FMRFamide. However, while the name may seem complex, there are not many commonly used synonyms for this term in scientific literature. In some cases, researchers may refer to it simply as FMRFamide or FMRF-like peptide. Nevertheless, it is important to note that these synonyms do not fully encompass the specific properties and structure of FMRFamide D Met Isomer. Thus, researchers emphasize using the complete and accurate name to ensure precision in their studies and discussions surrounding this significant peptide hormone.