The CAS Registry Mumber 154229-24-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,4,2,2 and 9 respectively; the second part has 2 digits, 2 and 4 respectively. Calculate Digit Verification of CAS Registry Number 154229-24: (8*1)+(7*5)+(6*4)+(5*2)+(4*2)+(3*9)+(2*2)+(1*4)=120 120 % 10 = 0 So 154229-24-0 is a valid CAS Registry Number.
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