"Z(OMe)-Glu(OBzl)-Ser(Bzl)-NHNH-Troc" represents a peptide sequence with specific protecting groups. The sequence consists of four amino acids: Glutamic acid (Glu), Serine (Ser), and two additional residues, each with unique protecting groups. The "Z(OMe)" group is a protecting group for the N-terminal amino group, which is crucial for preventing unwanted side reactions during peptide synthesis. "Glu(OBzl)" indicates that the side chain of glutamic acid is protected with a benzyl ester group, which shields the carboxylic acid group. "Ser(Bzl)" signifies that the hydroxyl group of serine is also protected with a benzyl group. The "NHNH" part suggests the presence of a free amino group and a free carboxylic acid group, which are essential for peptide bond formation. Lastly, "Troc" stands for the 2,2,2-trichloroethoxycarbonyl group, which is a protecting group for the C-terminal carboxylic acid, preventing it from participating in unwanted reactions. This specific sequence and the use of these protecting groups are important in the field of peptide chemistry, where they facilitate the controlled synthesis of complex peptide structures.
The CAS Registry Mumber 96922-25-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,6,9,2 and 2 respectively; the second part has 2 digits, 2 and 5 respectively. Calculate Digit Verification of CAS Registry Number 96922-25: (7*9)+(6*6)+(5*9)+(4*2)+(3*2)+(2*2)+(1*5)=167 167 % 10 = 7 So 96922-25-7 is a valid CAS Registry Number.