Z-Phe-Gly-Leu-NH2 is a synthetic tetrapeptide composed of four amino acids: phenylalanine (Phe), glycine (Gly), leucine (Leu), and a terminal amide group (NH2). The "Z" prefix indicates the presence of a carbobenzyloxy (Cbz) protecting group on the N-terminus, which is commonly used in peptide synthesis to prevent unwanted side reactions. This peptide sequence is of interest in the field of biochemistry and pharmaceuticals, as it can serve as a building block for larger peptide or protein structures, or as a model for studying peptide-protein interactions and enzymatic activity.
The CAS Registry Mumber 28709-66-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,7,0 and 9 respectively; the second part has 2 digits, 6 and 6 respectively. Calculate Digit Verification of CAS Registry Number 28709-66: (7*2)+(6*8)+(5*7)+(4*0)+(3*9)+(2*6)+(1*6)=142 142 % 10 = 2 So 28709-66-2 is a valid CAS Registry Number.
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