"Z(OMe)-Ser-Ser-Cys(Tmb)-Phe-Gly-Gly-NHNH2" is a complex peptide sequence consisting of several amino acids. It starts with a Z(OMe) group, which is a protecting group used in peptide synthesis to prevent unwanted side reactions. This is followed by two serine (Ser) residues, which are nonpolar amino acids. The sequence then includes a cysteine (Cys) residue with a Tmb (tetramethylbenzidine) group, which is often used as a chromophore for detection purposes. A phenylalanine (Phe), known for its aromatic ring, is next, followed by two glycine (Gly) residues, which are the simplest amino acids. The sequence ends with an NHNH2 group, indicating a terminal amine group. This peptide is likely used in biochemical research, possibly for studying protein-protein interactions or as a substrate in enzymatic reactions, given the presence of the Tmb group for detection and the Z(OMe) group for protection during synthesis.
The CAS Registry Mumber 99236-57-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,2,3 and 6 respectively; the second part has 2 digits, 5 and 7 respectively. Calculate Digit Verification of CAS Registry Number 99236-57: (7*9)+(6*9)+(5*2)+(4*3)+(3*6)+(2*5)+(1*7)=174 174 % 10 = 4 So 99236-57-4 is a valid CAS Registry Number.