"Z-Gln-Asn-Cys(Cys)-Pro-Arg(Mbs)-OtBu" is a peptide sequence consisting of seven amino acids, with specific modifications. The sequence starts with Z-protected glutamine (Z-Gln), followed by asparagine (Asn), a cysteine with a Cys protecting group (Cys(Cys)), proline (Pro), and arginine with an Mbs protecting group (Arg(Mbs)). The sequence ends with a tert-butyl (OtBu) group, which is commonly used to protect the carboxylic acid group in peptide synthesis. This particular sequence is designed for specific biochemical or pharmaceutical applications, where the protecting groups are crucial for maintaining the stability and reactivity of the peptide during synthesis and subsequent processing. The sequence's exact function or application would depend on the context in which it is used, such as in drug development, protein engineering, or as a research tool in biochemistry.
The CAS Registry Mumber 90303-79-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,3,0 and 3 respectively; the second part has 2 digits, 7 and 9 respectively. Calculate Digit Verification of CAS Registry Number 90303-79: (7*9)+(6*0)+(5*3)+(4*0)+(3*3)+(2*7)+(1*9)=110 110 % 10 = 0 So 90303-79-0 is a valid CAS Registry Number.