Z-Ser-ONB, also known as N-benzyloxycarbonyl-L-serine 4-nitrobenzyl ester, is a chemical compound commonly used in peptide synthesis. It is a protected form of L-serine, an amino acid, with a benzyloxycarbonyl (Z) group and a 4-nitrobenzyl (ONB) ester group. The Z group protects the amino group, while the ONB group protects the carboxylic acid group, allowing for controlled peptide bond formation. Z-Ser-ONB is particularly useful in solid-phase peptide synthesis, where it can be selectively deprotected and coupled to other amino acids to form peptides. Its stability and reactivity make it a valuable component in the synthesis of various peptide-based drugs, vaccines, and other bioactive molecules.
The CAS Registry Mumber 73584-95-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,5,8 and 4 respectively; the second part has 2 digits, 9 and 5 respectively. Calculate Digit Verification of CAS Registry Number 73584-95: (7*7)+(6*3)+(5*5)+(4*8)+(3*4)+(2*9)+(1*5)=159 159 % 10 = 9 So 73584-95-9 is a valid CAS Registry Number.