"Z-Phe-Leu-Arg(Mds)-Arg(Mds)-Ile-Arg(Mds)-Pro-OBut" is a peptide sequence consisting of nine amino acids, with the first amino acid, phenylalanine (Phe), being in the Z configuration. The sequence includes three instances of arginine (Arg) with a 4-methylbenzenesulfonyl (Mds) group attached, which is a protecting group used in peptide synthesis to prevent unwanted side reactions. The other amino acids in the sequence are leucine (Leu), isoleucine (Ile), and proline (Pro). The peptide is terminated with a butyl ester (OBut) group, which can be used to improve solubility or stability. This specific sequence may have potential applications in pharmaceuticals, as it could be designed to interact with specific biological targets or serve as a building block for larger peptide or protein structures.
The CAS Registry Mumber 80262-29-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,2,6 and 2 respectively; the second part has 2 digits, 2 and 9 respectively. Calculate Digit Verification of CAS Registry Number 80262-29: (7*8)+(6*0)+(5*2)+(4*6)+(3*2)+(2*2)+(1*9)=109 109 % 10 = 9 So 80262-29-9 is a valid CAS Registry Number.