"Z-Gly-Val-Ser-Phe-Val-Leu-OH" is a heptapeptide, a chain of seven amino acids. The sequence is named by the abbreviations of the amino acids it contains: Z (a protecting group), Gly (glycine), Val (valine), Ser (serine), Phe (phenylalanine), Val (valine), Leu (leucine), and OH (hydroxyl group). This specific sequence is often used in peptide synthesis and research, particularly in the study of protein structure and function. The presence of the Z group indicates that it is a protected peptide, which is crucial for preventing unwanted side reactions during synthesis. The hydroxyl group at the end suggests that it is a C-terminal hydroxyl peptide, which can be used in various biochemical assays or as a precursor in further peptide synthesis.
The CAS Registry Mumber 95303-72-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,5,3,0 and 3 respectively; the second part has 2 digits, 7 and 2 respectively. Calculate Digit Verification of CAS Registry Number 95303-72: (7*9)+(6*5)+(5*3)+(4*0)+(3*3)+(2*7)+(1*2)=133 133 % 10 = 3 So 95303-72-3 is a valid CAS Registry Number.