"Z-Asp(OBzl)-Lys(Z)-Pro-Asp(OBzl)-OBzl" is a peptide sequence consisting of five amino acids: Aspartic acid (Asp), Lysine (Lys), Proline (Pro), and two more Aspartic acids. The "Z" and "OBzl" groups are protecting groups used in peptide synthesis. The "Z" group (benzyloxycarbonyl) is a temporary protecting group for the amino group, while the "OBzl" group (benzyl) protects the carboxylic acid group. This specific sequence is a synthetic peptide, often used in research and pharmaceutical development, and the protecting groups ensure that the peptide链 maintains its structure during synthesis, preventing unwanted side reactions. Once the peptide is fully synthesized, the protecting groups are removed to reveal the active peptide sequence.
The CAS Registry Mumber 90236-02-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,2,3 and 6 respectively; the second part has 2 digits, 0 and 2 respectively. Calculate Digit Verification of CAS Registry Number 90236-02: (7*9)+(6*0)+(5*2)+(4*3)+(3*6)+(2*0)+(1*2)=105 105 % 10 = 5 So 90236-02-5 is a valid CAS Registry Number.