Carbobenzoxy-D-phenylalanyl-ε-carbobenzoxy-L-lysin, also known as Z-D-Phe-Z-Lys, is a synthetic peptide consisting of two amino acids, D-phenylalanine and L-lysine, connected by a peptide bond. The carbobenzoxy (Z) group is a protecting group used in peptide synthesis to prevent unwanted side reactions. In Carbobenzoxy-D-phenylalanyl-ε-carbobenzoxy-L-lysin, the Z group is attached to both the N-terminal D-phenylalanine and the ε-amino group of the L-lysine, forming a dipeptide. This specific arrangement is crucial for maintaining the peptide's structure and stability during synthesis and purification processes. Z-D-Phe-Z-Lys is often used as a building block in the synthesis of larger peptides and proteins, as well as in the study of peptide-protein interactions and drug development.
The CAS Registry Mumber 1436-75-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,4,3 and 6 respectively; the second part has 2 digits, 7 and 5 respectively. Calculate Digit Verification of CAS Registry Number 1436-75: (6*1)+(5*4)+(4*3)+(3*6)+(2*7)+(1*5)=75 75 % 10 = 5 So 1436-75-5 is a valid CAS Registry Number.