"Z(OMe)-Thr-Asn-Ser-Tyr-NHNH2" is a peptide sequence consisting of six amino acids: Z(OMe), Thr (Threonine), Asn (Asparagine), Ser (Serine), Tyr (Tyrosine), and NHNH2 (a terminal group). Z(OMe) refers to a protected form of the amino acid, where the carboxylic acid group is esterified with a methoxy group, which is a common strategy in peptide synthesis to prevent unwanted side reactions. This sequence is of interest in biochemistry and pharmaceuticals, potentially serving as a building block for larger proteins or as a component in drug development. The specific arrangement and protection of these amino acids can influence the peptide's stability, reactivity, and biological activity.
The CAS Registry Mumber 90709-85-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,7,0 and 9 respectively; the second part has 2 digits, 8 and 5 respectively. Calculate Digit Verification of CAS Registry Number 90709-85: (7*9)+(6*0)+(5*7)+(4*0)+(3*9)+(2*8)+(1*5)=146 146 % 10 = 6 So 90709-85-6 is a valid CAS Registry Number.