The chemical sequence "Z-Cys(Bzl)-Phe-Phe-Gln-Asn-Cys(Bzl)-MeAla-Arg(Tos)-Gly-NH2" represents a peptide, which is a chain of amino acids. In this specific peptide, the amino acids are linked together in the following order: Cysteine (Cys) with a benzyl (Bzl) protecting group, Phenylalanine (Phe), another Phenylalanine (Phe), Glutamine (Gln), Asparagine (Asn), another Cysteine (Cys) with a benzyl (Bzl) protecting group, Methionine (MeAla), Arginine (Arg) with a tosyl (Tos) protecting group, and Glycine (Gly). The sequence ends with an amide group (NH2). This peptide is characterized by the presence of protecting groups on the cysteine residues, which are commonly used in peptide synthesis to prevent unwanted side reactions, and the tosyl group on the arginine, which can be used for further functionalization or purification steps. The sequence is likely part of a larger biologically active molecule or a synthetic compound designed for specific research or therapeutic purposes.
The CAS Registry Mumber 98525-41-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,5,2 and 5 respectively; the second part has 2 digits, 4 and 1 respectively. Calculate Digit Verification of CAS Registry Number 98525-41: (7*9)+(6*8)+(5*5)+(4*2)+(3*5)+(2*4)+(1*1)=168 168 % 10 = 8 So 98525-41-8 is a valid CAS Registry Number.