"Z(OMe)-Arg(Mts)-Gly-NHNH-Troc" is a complex peptide sequence consisting of four amino acids: Z(OMe), Arg(Mts), Gly, and NHNH, with a Tropiolum (Troc) protecting group. Z(OMe) represents a carbobenzoxy (Cbz) group with a methoxyethyl (OMe) substitution, which is a common protecting group for the N-terminus of peptides. Arg(Mts) denotes an arginine residue with a 4-methyltrityl (Mts) group attached to its side chain, serving as a protecting group for the guanidinium group. Gly is glycine, a simple amino acid with a single hydrogen atom as a side chain. NHNH represents a terminal amino group, indicating the peptide's C-terminus. The Tropiolum (Troc) group is a protecting group for the terminal amino group, preventing unwanted side reactions. This peptide sequence is likely used in peptide synthesis, where protecting groups are essential for controlling the reactivity of specific functional groups during the assembly process.
The CAS Registry Mumber 90994-52-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,9,9 and 4 respectively; the second part has 2 digits, 5 and 2 respectively. Calculate Digit Verification of CAS Registry Number 90994-52: (7*9)+(6*0)+(5*9)+(4*9)+(3*4)+(2*5)+(1*2)=168 168 % 10 = 8 So 90994-52-8 is a valid CAS Registry Number.