"Z(OMe)-Glu(OBzl)-Ile-NHNH-Troc" represents a peptide sequence with specific chemical modifications. The "Z" group is a protecting group for the amino group, where "Z" stands for benzyloxycarbonyl, and "OMe" indicates that it is methylated. "Glu" is the abbreviation for glutamic acid, and "OBzl" signifies that the carboxylic acid group of glutamic acid is protected by a benzyl ester. "Ile" stands for isoleucine, an amino acid. The "NHNH" part indicates a free amino group followed by a free amino group, suggesting a dipeptide linkage. Lastly, "Troc" is a protecting group for the terminal amino group, where "Troc" stands for 2,2,2-trichloroethoxycarbonyl. This sequence is a protected peptide that can be used in peptide synthesis, with the protecting groups preventing unwanted side reactions until the desired peptide bond formation occurs.
The CAS Registry Mumber 83550-65-6 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 5 respectively. Calculate Digit Verification of CAS Registry Number 83550-65: (7*8)+(6*3)+(5*5)+(4*5)+(3*0)+(2*6)+(1*5)=136 136 % 10 = 6 So 83550-65-6 is a valid CAS Registry Number.