Carbobenzoxy-L-phenylalanyl-ε-carbobenzoxy-L-lysin, also known as Z-Phe-Z-Lys, is a dipeptide compound consisting of two amino acids, phenylalanine and lysine, linked together by a peptide bond. The carbobenzoxy (Z) group is a protecting group used in peptide synthesis, which temporarily blocks the amino group of the lysine residue, preventing unwanted side reactions during the synthesis process. Carbobenzoxy-L-phenylalanyl-ε-carbobenzoxy-L-lysin is commonly used in the field of organic chemistry and peptide synthesis, as it serves as a building block for the construction of larger peptide chains and proteins. The carbobenzoxy group can be removed under mild acidic conditions, allowing for further reactions and the formation of longer peptide sequences.
The CAS Registry Mumber 1909-02-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,0 and 9 respectively; the second part has 2 digits, 0 and 2 respectively. Calculate Digit Verification of CAS Registry Number 1909-02: (6*1)+(5*9)+(4*0)+(3*9)+(2*0)+(1*2)=80 80 % 10 = 0 So 1909-02-0 is a valid CAS Registry Number.