The CAS Registry Mumber 790224-45-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,9,0,2,2 and 4 respectively; the second part has 2 digits, 4 and 5 respectively. Calculate Digit Verification of CAS Registry Number 790224-45: (8*7)+(7*9)+(6*0)+(5*2)+(4*2)+(3*4)+(2*4)+(1*5)=162 162 % 10 = 2 So 790224-45-2 is a valid CAS Registry Number.
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