The CAS Registry Mumber 119619-27-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,6,1 and 9 respectively; the second part has 2 digits, 2 and 7 respectively. Calculate Digit Verification of CAS Registry Number 119619-27: (8*1)+(7*1)+(6*9)+(5*6)+(4*1)+(3*9)+(2*2)+(1*7)=141 141 % 10 = 1 So 119619-27-1 is a valid CAS Registry Number.
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