"Z(OMe)-Gln-Glu(OBzl)-Lys(Z)" is a peptide sequence consisting of four amino acids: glutamine (Gln), glutamic acid (Glu), and lysine (Lys), with specific protecting groups. The "Z" group is a benzyloxycarbonyl (Z) protecting group, which is used to temporarily block the amino group of the lysine and glutamine residues, preventing unwanted side reactions during peptide synthesis. The "OMe" group indicates that the glutamine has a methoxy protecting group on its side chain, which is essential for protecting the amide group during synthesis. The "OBzl" group is a benzyl protecting group on the side chain of glutamic acid, which shields its carboxylic acid group. This specific sequence and the use of protecting groups are crucial for the controlled synthesis of complex peptides and proteins, ensuring that the desired chemical bonds are formed without interference from other reactive groups.
The CAS Registry Mumber 64824-19-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,8,2 and 4 respectively; the second part has 2 digits, 1 and 9 respectively. Calculate Digit Verification of CAS Registry Number 64824-19: (7*6)+(6*4)+(5*8)+(4*2)+(3*4)+(2*1)+(1*9)=137 137 % 10 = 7 So 64824-19-7 is a valid CAS Registry Number.
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