The CAS Registry Mumber 1352810-34-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,5,2,8,1 and 0 respectively; the second part has 2 digits, 3 and 4 respectively. Calculate Digit Verification of CAS Registry Number 1352810-34: (9*1)+(8*3)+(7*5)+(6*2)+(5*8)+(4*1)+(3*0)+(2*3)+(1*4)=134 134 % 10 = 4 So 1352810-34-4 is a valid CAS Registry Number.
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