"Z-Leu-Arg(NO2)-2-NA" is a synthetic tripeptide compound, where "Z" stands for the carbobenzoxy group, a protecting group used in peptide synthesis to prevent unwanted side reactions. "Leu" represents leucine, an essential amino acid. "Arg(NO2)" denotes arginine with a nitro group (NO2) attached, which can alter the properties of the peptide. The "2-NA" likely refers to 2-naphtylamide, a moiety that can be used for fluorescent labeling or as a reporter group. Z-Leu-Arg(NO2)-2-NA is often used in biological research for studying protein-protein interactions, enzyme activity, or as a substrate in assays due to its specific structure and functional groups. The nitro group on arginine can enhance the reactivity or specificity of the peptide, while the 2-naphtylamide group can facilitate detection and quantification.
The CAS Registry Mumber 51078-22-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,0,7 and 8 respectively; the second part has 2 digits, 2 and 2 respectively. Calculate Digit Verification of CAS Registry Number 51078-22: (7*5)+(6*1)+(5*0)+(4*7)+(3*8)+(2*2)+(1*2)=99 99 % 10 = 9 So 51078-22-9 is a valid CAS Registry Number.