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77180-98-4

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77180-98-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77180-98-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,1,8 and 0 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 77180-98:
(7*7)+(6*7)+(5*1)+(4*8)+(3*0)+(2*9)+(1*8)=154
154 % 10 = 4
So 77180-98-4 is a valid CAS Registry Number.

77180-98-4Relevant articles and documents

Design and synthesis of 2',3'-dideoxy-2',3'-didehydro-β-L-cytidine (β- L-d4C) and 2',3'-dideoxy-2'-3'-didehydro-β-L-5-fluorocytidine (β-L-Fd4C), two exceptionally potent inhibitors of human hepatitis B virus (HBV) and potent inhibitors of human immunodeficiency virus (HIV) in vitro

Lin,Luo,Liu,Zhu,Gullen,Dutschman,Cheng -

, p. 1757 - 1759 (1996)

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Stereospecific synthesis and biological evaluations of β-L-pentofuranonucleoside derivatives of 5-fluorouracil and 5-fluorocytosine

Griffon, Jean-Francois,Mathe, Christophe,Faraj, Abdesslem,Aubertin, Anne-Marie,De Clercq, Erik,Balzarini, Jan,Sommadossi, Jean-Pierre,Gosselin, Gilles

, p. 447 - 460 (2007/10/03)

In the search for new chemotherapeutic agents, we have focused our work on the synthesis and the study of several unnatural β-L-nucleoside analogues. In this paper, we report on the synthesis of β-L-pentofuranonucleosides (and their 2′-deoxy derivatives) of 5-fluorouracil and their inhibitory effects on the proliferation of several murine and human tumor cells. The corresponding 5-fluorocytosine derivatives were also synthesized and their anti-HIV and anti-HBV activities have been evaluated.

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