The CAS Registry Mumber 134793-56-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,7,9 and 3 respectively; the second part has 2 digits, 5 and 6 respectively. Calculate Digit Verification of CAS Registry Number 134793-56: (8*1)+(7*3)+(6*4)+(5*7)+(4*9)+(3*3)+(2*5)+(1*6)=149 149 % 10 = 9 So 134793-56-9 is a valid CAS Registry Number.
Synthesis and anti human immune virus activity of some new fluorine containing substituted-3-thioxo-1,2,4-triazin-5-ones
Abdel-Rahman
, p. 379 - 389 (2007/10/02)
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