Carbobenzoxy-D-valyl-ε-carbobenzoxy-D-lysin, also known as Z-D-Val-Z-D-Lys, is a synthetic peptide compound consisting of two amino acids, D-valine and D-lysine, connected by a peptide bond. The carbobenzoxy (Z) groups are protecting groups attached to the N-terminal and C-terminal ends of the peptide, which prevent unwanted side reactions and protect the peptide from degradation. This specific arrangement of amino acids and protecting groups is used in various applications, such as in the synthesis of larger peptides and proteins, as well as in the study of peptide-protein interactions. The D-configuration of the amino acids indicates that they are in their non-natural, mirror-image form, which can have different properties compared to their L-amino acid counterparts.
The CAS Registry Mumber 3949-03-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,9,4 and 9 respectively; the second part has 2 digits, 0 and 3 respectively. Calculate Digit Verification of CAS Registry Number 3949-03: (6*3)+(5*9)+(4*4)+(3*9)+(2*0)+(1*3)=109 109 % 10 = 9 So 3949-03-9 is a valid CAS Registry Number.