"Z-Ser(But)-Arg(Tos)-Leu-OH" is a peptide compound consisting of four amino acids: N-benzyloxycarbonyl (Z)-protected serine (Ser), tert-butyloxycarbonyl (But)-protected serine, tosyl (Tos)-protected arginine (Arg), and leucine (Leu). The sequence is connected by peptide bonds, and the terminal hydroxyl group (-OH) indicates the C-terminus of the peptide. This specific arrangement and protection of amino acids are crucial for maintaining the peptide's stability and preventing unwanted side reactions during synthesis or biological processes. The compound is often used in peptide synthesis and research, where the protecting groups (Z, But, and Tos) are strategically placed to facilitate the stepwise assembly of the peptide chain and can be removed at specific stages to yield the desired peptide product.
The CAS Registry Mumber 83077-90-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,0,7 and 7 respectively; the second part has 2 digits, 9 and 0 respectively. Calculate Digit Verification of CAS Registry Number 83077-90: (7*8)+(6*3)+(5*0)+(4*7)+(3*7)+(2*9)+(1*0)=141 141 % 10 = 1 So 83077-90-1 is a valid CAS Registry Number.