"Z(OMe)-Ala-Lys(Z)-Lys(Z)-Tyr-OMe" is a peptide sequence consisting of five amino acids: Z(OMe)-protected alanine, two Z-protected lysines, and a tyrosine, with an OMe group at the C-terminus. The Z group is a protecting group used in peptide synthesis to prevent unwanted side reactions, while the OMe group is a methyl ether protecting group. This specific sequence is of interest in the field of peptide chemistry, potentially for its role in protein structure, function, or as a component in drug design. The protection of the amino and carboxyl groups by the Z and OMe groups, respectively, allows for controlled synthesis and subsequent deprotection to yield the desired peptide with free functional groups for further reactions or biological studies.
The CAS Registry Mumber 89762-78-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,7,6 and 2 respectively; the second part has 2 digits, 7 and 8 respectively. Calculate Digit Verification of CAS Registry Number 89762-78: (7*8)+(6*9)+(5*7)+(4*6)+(3*2)+(2*7)+(1*8)=197 197 % 10 = 7 So 89762-78-7 is a valid CAS Registry Number.