The chemical "Z-Ser(But)-Asp(OBut)-Gly-Thr(But)-Phe-Thr(But)-Ser(But)-Glu(OBut)-Leu-OH" is a peptide compound consisting of a sequence of amino acids. It features a Z-group protecting the N-terminus, and a series of amino acids with various protecting groups and side chains. Specifically, it includes serine (Ser), aspartic acid (Asp), glycine (Gly), threonine (Thr), phenylalanine (Phe), glutamic acid (Glu), and leucine (Leu). The But group is a tert-butyl protecting group, which is used to protect the hydroxyl groups of serine, threonine, and glutamic acid from unwanted reactions. The OBut group is an ester protecting group, used for aspartic acid and glutamic acid to protect their carboxylic acid groups. This peptide is likely used in research or pharmaceutical development, where the specific sequence and protection groups are crucial for its stability and reactivity in various chemical environments.
The CAS Registry Mumber 83077-99-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,0,7 and 7 respectively; the second part has 2 digits, 9 and 9 respectively. Calculate Digit Verification of CAS Registry Number 83077-99: (7*8)+(6*3)+(5*0)+(4*7)+(3*7)+(2*9)+(1*9)=150 150 % 10 = 0 So 83077-99-0 is a valid CAS Registry Number.