"Z(OMe)-Arg(Mts)-Lys(Z)-NHNH2" is a complex peptide compound consisting of four amino acid residues: Z(OMe)-Arginine, Methionine-Sulfoxide (Mts), Lysine (Z), and a terminal NHNH2 group. Z(OMe) refers to the N-benzyloxycarbonyl (Z) protecting group on the side chain of arginine, which is commonly used in peptide synthesis to prevent unwanted side reactions. Mts denotes methionine sulfoxide, a modified form of methionine that can occur naturally or be introduced during peptide synthesis. Lysine (Z) has a Z group on its side chain, similar to arginine, to protect the amino group during synthesis. The NHNH2 at the end indicates a terminal guanidine group, which can be used for further reactions or as a recognition site for specific biological targets. This peptide is likely used in research settings for studying protein-protein interactions, drug design, or as a probe in biological assays due to its unique sequence and functional groups.
The CAS Registry Mumber 75671-71-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,6,7 and 1 respectively; the second part has 2 digits, 7 and 1 respectively. Calculate Digit Verification of CAS Registry Number 75671-71: (7*7)+(6*5)+(5*6)+(4*7)+(3*1)+(2*7)+(1*1)=155 155 % 10 = 5 So 75671-71-5 is a valid CAS Registry Number.