Thymidine is a nucleoside, a component of DNA, consisting of the base thymine attached to a deoxyribose sugar. It plays a crucial role in DNA synthesis and replication, as it pairs with adenine to form the backbone of the double helix structure. Thymidine is essential for the proper functioning of cells and is involved in various biological processes, including cell division, DNA repair, and gene expression. It is also used in medical research, such as in the synthesis of DNA probes and in the development of antiviral drugs targeting viral DNA replication.
The CAS Registry Mumber 55-89-0 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 5 and 5 respectively; the second part has 2 digits, 8 and 9 respectively. Calculate Digit Verification of CAS Registry Number 55-89: (4*5)+(3*5)+(2*8)+(1*9)=60 60 % 10 = 0 So 55-89-0 is a valid CAS Registry Number.