The CAS Registry Mumber 74750-04-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,7,5 and 0 respectively; the second part has 2 digits, 0 and 4 respectively. Calculate Digit Verification of CAS Registry Number 74750-04: (7*7)+(6*4)+(5*7)+(4*5)+(3*0)+(2*0)+(1*4)=132 132 % 10 = 2 So 74750-04-2 is a valid CAS Registry Number.
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