Cas 203171-89-5,3-Chloro-6-(4-chloro-phenyl)-4-methylsulfanyl-pyran-2-one

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Check Digit Verification of cas no

The CAS Registry Mumber 203171-89-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,1,7 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 203171-89:
(8*2)+(7*0)+(6*3)+(5*1)+(4*7)+(3*1)+(2*8)+(1*9)=95
95 % 10 = 5
So 203171-89-5 is a valid CAS Registry Number.

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203171-89-5Relevant academic research and scientific papers

Polysubstituted 2H-pyran-2-ones: A new class of hepatoprotective agents

Ram, Vishnu J.,Haque, Navedul,Nath, Mahendra,Singh, Sunil K.,Hussaini, Falak A.,Tripathi,Shoeb

, p. 3149 - 3152 (2007/10/03)

The synthesis and hepatoprotective activity of 6-aryl-3-substituted-4-methylthio-2H-pyran-2-ones (3, 5, 7) and the corresponding 2-thiones (6), 6-aryl-4-methylthio-2H-pyran-2-ones (4) and 6-aryl-3-carbethoxy-5-cyano-4-methylthio-2H-pyran-2-ones are described.

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