139021-15-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139021-15-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,2 and 1 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 139021-15:
(8*1)+(7*3)+(6*9)+(5*0)+(4*2)+(3*1)+(2*1)+(1*5)=101
101 % 10 = 1
So 139021-15-1 is a valid CAS Registry Number.