The CAS Registry Mumber 77646-25-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,6,4 and 6 respectively; the second part has 2 digits, 2 and 5 respectively. Calculate Digit Verification of CAS Registry Number 77646-25: (7*7)+(6*7)+(5*6)+(4*4)+(3*6)+(2*2)+(1*5)=164 164 % 10 = 4 So 77646-25-4 is a valid CAS Registry Number.
Studies on Tumor Promoters. 8. The Synthesis of Phorbol
Wender, Paul A.,Kogen, Hiroshi,Lee, Hee Yoon,Munger, John D.,Wilhelm, Robert S.,Williams, Peter D.
, p. 8957 - 8958 (2007/10/02)
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