Z-DL-Tle-Gly-OEt is a peptide compound consisting of four amino acid residues: Z (a protecting group), D-leucine (DL-Tle), glycine (Gly), and ethyl ester (OEt). The Z group is a benzyloxycarbonyl (Cbz) protecting group, which is commonly used in peptide synthesis to protect the amino group of the first amino acid. D-leucine is an isomer of leucine, featuring a D-configuration at the chiral center, while glycine is the simplest amino acid with a hydrogen atom as its side chain. The ethyl ester group (OEt) is a protecting group for the carboxylic acid group of the last amino acid in the peptide sequence. This specific arrangement of amino acids and protecting groups makes Z-DL-Tle-Gly-OEt a unique peptide with potential applications in pharmaceuticals, research, and other fields.
The CAS Registry Mumber 68319-53-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,3,1 and 9 respectively; the second part has 2 digits, 5 and 3 respectively. Calculate Digit Verification of CAS Registry Number 68319-53: (7*6)+(6*8)+(5*3)+(4*1)+(3*9)+(2*5)+(1*3)=149 149 % 10 = 9 So 68319-53-9 is a valid CAS Registry Number.