The CAS Registry Mumber 1392315-37-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,9,2,3,1 and 5 respectively; the second part has 2 digits, 3 and 7 respectively. Calculate Digit Verification of CAS Registry Number 1392315-37: (9*1)+(8*3)+(7*9)+(6*2)+(5*3)+(4*1)+(3*5)+(2*3)+(1*7)=155 155 % 10 = 5 So 1392315-37-5 is a valid CAS Registry Number.
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