Urodilantin is and analog of ANF and is found only in Urine. If injected into the blood, it acts similarly to ANF to contol body water, sodium,potassium, and Adiposity levels in the body.Human: H-Thr-Ala-Pro-Arg-Ser-Leu-Arg-Arg-Ser-Ser-Cys-Phe-Gly-Gly-Arg-Met-Asp-Arg-Ile-Gly-Ala-Gln-Ser-Gly-Leu-Gly-Cys-Asn-Ser-Phe-Arg-Tyr-OH (Cys11-Cys27) or H-TAPRSLRRSSCFGGRMDRIGAQSGLGCNSFRY-OH (Cys11-Cys27)