The chemical sequence "Z-Arg(NO2)-Lys(Z)-Asp(OBzl)-Val-Tyr-Val-Glu(OBzl)-Leu-Tyr-Leu-NHNH2" represents a peptide, which is a chain of amino acids. In this specific peptide, the amino acids are linked together in a particular order and are modified with protective groups to prevent unwanted reactions during synthesis. The "Z" group is a benzyloxycarbonyl (Cbz) protecting group, commonly used to protect the amino group of lysine and the N-terminus of the peptide. The "NO2" group indicates that the arginine has a nitro group attached, which can be important for certain biological activities. The "OBzl" group is a benzyl ester protecting group, used to protect the carboxyl group of aspartic acid and glutamic acid. This peptide is a complex molecule with specific structural features that are crucial for its function, which could be related to biological signaling or other cellular processes. The sequence ends with a terminal amide group (NHNH2), which is characteristic of many bioactive peptides.
The CAS Registry Mumber 84979-65-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,4,9,7 and 9 respectively; the second part has 2 digits, 6 and 5 respectively. Calculate Digit Verification of CAS Registry Number 84979-65: (7*8)+(6*4)+(5*9)+(4*7)+(3*9)+(2*6)+(1*5)=197 197 % 10 = 7 So 84979-65-7 is a valid CAS Registry Number.