"Z-Gln-Ser-Leu-Pro-OBut" is a peptide compound consisting of five amino acids: glutamine (Gln), serine (Ser), leucine (Leu), proline (Pro), and a terminal tert-butyloxycarbonyl (OBut) group. The "Z" prefix indicates that the peptide is protected with a benzyloxycarbonyl (Cbz) group, which is commonly used in peptide synthesis to prevent unwanted side reactions. This specific sequence of amino acids is not a naturally occurring peptide but is likely used in research or pharmaceutical development for studying protein-protein interactions, drug design, or other biological applications. The OBut group serves as a protecting group for the peptide's carboxyl terminus, which can be removed under specific conditions to reveal the free carboxyl group, allowing for further reactions or studies.
The CAS Registry Mumber 73535-19-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,5,3 and 5 respectively; the second part has 2 digits, 1 and 9 respectively. Calculate Digit Verification of CAS Registry Number 73535-19: (7*7)+(6*3)+(5*5)+(4*3)+(3*5)+(2*1)+(1*9)=130 130 % 10 = 0 So 73535-19-0 is a valid CAS Registry Number.