"Z-L-Pro-Leu-Aib-Aib-Glu-Vol" is a peptide sequence consisting of seven amino acids. The "Z" group is a protecting group used in peptide synthesis to prevent unwanted side reactions. L-Pro, L-Leu, and Aib are the L-isomer of proline, leucine, and alpha-aminoisobutyric acid, respectively, while Glu is the abbreviation for glutamic acid. Vol stands for 2-aminoisobutyric acid, also known as Aib. This specific sequence is of interest in the field of peptide chemistry, potentially for its unique properties or biological activity. The presence of Aib, a non-proteinogenic amino acid, may contribute to the stability or specific conformation of the peptide, which could be relevant for drug development or understanding protein folding.
The CAS Registry Mumber 83537-99-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,5,3 and 7 respectively; the second part has 2 digits, 9 and 9 respectively. Calculate Digit Verification of CAS Registry Number 83537-99: (7*8)+(6*3)+(5*5)+(4*3)+(3*7)+(2*9)+(1*9)=159 159 % 10 = 9 So 83537-99-9 is a valid CAS Registry Number.