The chemical sequence "Z(OMe)-Thr-Thr-Lys(Z)-Asp(OBzl)-Leu-Lys(Z)-NHNH2" represents a peptide, which is a short chain of amino acids. In this specific peptide, the amino acids are linked together in the following order:
1. Z(OMe)-Thr: This indicates that the peptide starts with a threonine (Thr) amino acid that has a Z(OMe) protecting group. The Z group is a common protecting group used in peptide synthesis to prevent unwanted side reactions, and the OMe (methyl ether) group is a specific type of Z group.
2. Thr: A second threonine amino acid follows the first.
3. Lys(Z): This is a lysine (Lys) amino acid with a Z protecting group, similar to the first one.
4. Asp(OBzl): This is an aspartic acid (Asp) with an OBzl (benzyl ester) protecting group, which is different from the Z group and is used to protect the carboxylic acid group.
5. Leu: This is a leucine (Leu) amino acid.
6. Lys(Z): Another lysine (Lys) amino acid with a Z protecting group.
7. NHNH2: This indicates the end of the peptide chain, with a terminal amine group (NH2) that is not involved in peptide bonding, and an additional amine group (NH) that could be involved in further reactions or serve as a recognition site for other molecules.
This peptide is likely a part of a larger protein or a synthetic compound designed for specific biological or chemical purposes, such as drug development or biochemical research. The protecting groups are crucial for the controlled synthesis of the peptide, ensuring that the amino acids are added in the correct sequence and that the peptide maintains its desired structure and function.
The CAS Registry Mumber 83550-62-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,5,5 and 0 respectively; the second part has 2 digits, 6 and 2 respectively. Calculate Digit Verification of CAS Registry Number 83550-62: (7*8)+(6*3)+(5*5)+(4*5)+(3*0)+(2*6)+(1*2)=133 133 % 10 = 3 So 83550-62-3 is a valid CAS Registry Number.