Carbobenzoxy-L-valyl-ε-carbobenzoxy-D-lysin, also known as Z-Val-Z-Lys, is a synthetic peptide consisting of two amino acids, L-valine and D-lysine, connected by a peptide bond. The carbobenzoxy (Z) group is a protecting group used in peptide synthesis, which temporarily blocks the amino group of the amino acids, preventing unwanted side reactions. In Carbobenzoxy-L-valyl-ε-carbobenzoxy-D-lysin, the L-valine is in the standard L-configuration, while the lysine is in the D-configuration, making it a non-natural, chiral peptide. This specific arrangement of amino acids and protecting groups is crucial for its stability and reactivity in various chemical and biological applications, such as in the synthesis of larger peptides and proteins, as well as in the study of peptide-protein interactions.
The CAS Registry Mumber 1436-72-2 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 2 respectively. Calculate Digit Verification of CAS Registry Number 1436-72: (6*1)+(5*4)+(4*3)+(3*6)+(2*7)+(1*2)=72 72 % 10 = 2 So 1436-72-2 is a valid CAS Registry Number.