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137157-38-1

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137157-38-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137157-38-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,1,5 and 7 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 137157-38:
(8*1)+(7*3)+(6*7)+(5*1)+(4*5)+(3*7)+(2*3)+(1*8)=131
131 % 10 = 1
So 137157-38-1 is a valid CAS Registry Number.

137157-38-1Downstream Products

137157-38-1Relevant articles and documents

L-thymidine is phosphorylated by herpes simplex virus type 1 thymidine kinase and inhibits viral growth

Spadari,Maga,Focher,Ciarrocchi,Manservigi,Arcamone,Capobianco,Carcuro,Colonna,Iotti,Garbesi

, p. 4214 - 4220 (1992)

We have demonstrated that herpes simplex 1 (HSV1) thymidine kinase (TK) shows no stereospecificity for D- and L-β-nucleosides. In vitro, L enantiomers are not recognized by human TK, but function as specific substrates for the viral enzyme in the order: L-thymidine (L-T) >> 2'-deoxy- L-guanosine (L-dG) > 2'-deoxy-L-uridine (L-dU) > 2'-deoxy-L-cytidine (L-dC) > 2'-deoxy-L-adenosine (L-dA). HSV1 TK phosphorylates both thymidine enantiomers to their corresponding monophosphates with identical efficiency and the K(i) of L-T (2 μM) is almost identical to the K(m) for the natural substrate D-T (2.8 μM). The L enantiomer reduces the incorporation of exogenous [3H]T into cellular DNA in HeLa TK-/HSV1 TK+ but not in wild-type HeLa cells, without affecting RNA, protein synthesis, cell growth, and viability. L-T markedly reduces HSV1 multiplication in HeLa cells. Our observations could lead to the development of a novel class of antiviral drugs characterized by low toxicity.

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