"Z(OMe)-Ser-Arg(Mts)-Leu-Leu-NHNH2" is a peptide sequence consisting of six amino acids. The sequence starts with Z(OMe), which is a protecting group for the N-terminus of the peptide, specifically the O-methyl group of the carbobenzoxy (Cbz) group. This is followed by serine (Ser), a small, uncharged amino acid. Next is arginine (Arg) with an Mts protecting group, where Mts stands for 4-methyltrityl, a protecting group used in solid-phase peptide synthesis. The sequence then includes two leucine (Leu) residues, which are hydrophobic amino acids. The peptide ends with an NHNH2 group, indicating a free amine group at the C-terminus. This particular sequence is likely used in peptide synthesis for research or pharmaceutical purposes, with the protecting groups ensuring the correct formation of peptide bonds and the preservation of the peptide's structure during synthesis.
The CAS Registry Mumber 89777-90-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,7,7 and 7 respectively; the second part has 2 digits, 9 and 0 respectively. Calculate Digit Verification of CAS Registry Number 89777-90: (7*8)+(6*9)+(5*7)+(4*7)+(3*7)+(2*9)+(1*0)=212 212 % 10 = 2 So 89777-90-2 is a valid CAS Registry Number.