The chemical "Z-Phe-Leu-Arg(Mds)-Arg(Mds)-Ile-Arg(Mds)-Pro-Lys(Boc)-Leu-Lys(Boc)-OBut" is a peptide sequence consisting of 11 amino acids. It features a combination of natural and modified amino acids, including Z-protected phenylalanine (Z-Phe), leucine (Leu), arginine with a 4-methylbenzenesulfonyl (Mds) group, isoleucine (Ile), proline (Pro), lysine with a tert-butyloxycarbonyl (Boc) group, and another leucine (Leu). The sequence ends with a butyl ester (OBut) group, which is commonly used to improve the solubility and stability of the peptide. This specific arrangement of amino acids and protective groups suggests that it may be designed for a particular biological function or as a potential therapeutic agent, although without additional context, the exact purpose or application cannot be determined.
The CAS Registry Mumber 80220-22-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,2,2 and 0 respectively; the second part has 2 digits, 2 and 2 respectively. Calculate Digit Verification of CAS Registry Number 80220-22: (7*8)+(6*0)+(5*2)+(4*2)+(3*0)+(2*2)+(1*2)=80 80 % 10 = 0 So 80220-22-0 is a valid CAS Registry Number.