"Z(OMe)-Ser-Glu(OBzl)-Ile-NHNH-Troc" represents a peptide sequence with specific chemical modifications. The peptide consists of four amino acids: Serine (Ser), Glutamic acid (Glu), Isoleucine (Ile), and a terminal NHNH group, which suggests a peptide bond at the end. The "Z(OMe)" and "Troc" are protecting groups used in peptide synthesis. "Z(OMe)" is a benzyloxycarbonyl group with a methoxy substituent, which protects the amino group of serine. "Glu(OBzl)" indicates that the side chain carboxylic acid of glutamic acid is protected by a benzyl group. "Troc" stands for 2,2,2-trichloroethoxycarbonyl, a protecting group for the amino group of the terminal amino acid. This sequence is likely used in the synthesis of larger peptides or proteins, with the protecting groups ensuring that the peptide链 maintains its integrity during the synthesis process.
The CAS Registry Mumber 83550-66-7 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 6 respectively. Calculate Digit Verification of CAS Registry Number 83550-66: (7*8)+(6*3)+(5*5)+(4*5)+(3*0)+(2*6)+(1*6)=137 137 % 10 = 7 So 83550-66-7 is a valid CAS Registry Number.