"Z-Val-Lys(Z)-Asp(OBzl)-Val-Tyr-OBzl" is a peptide sequence consisting of six amino acids: Valine (Val), Lysine (Lys), Aspartic acid (Asp), Valine (Val), Tyrosine (Tyr), and two protecting groups, Z (benzyloxycarbonyl) and OBzl (benzyl). This specific arrangement of amino acids is designed to protect certain functional groups during peptide synthesis, which is crucial for the formation of the desired peptide bonds and the overall structure of the peptide. The Z group is a temporary protecting group that shields the amino group of lysine, while the OBzl group protects the carboxylic acid group of aspartic acid. These protecting groups are removed at specific stages of the synthesis process to allow for the formation of peptide bonds and the completion of the peptide chain. This particular sequence is of interest in peptide chemistry and may have applications in the development of drugs, vaccines, or other bioactive molecules.
The CAS Registry Mumber 75957-64-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,9,5 and 7 respectively; the second part has 2 digits, 6 and 4 respectively. Calculate Digit Verification of CAS Registry Number 75957-64: (7*7)+(6*5)+(5*9)+(4*5)+(3*7)+(2*6)+(1*4)=181 181 % 10 = 1 So 75957-64-1 is a valid CAS Registry Number.