1021021-78-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1021021-78-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,1,0,2 and 1 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1021021-78:
(9*1)+(8*0)+(7*2)+(6*1)+(5*0)+(4*2)+(3*1)+(2*7)+(1*8)=62
62 % 10 = 2
So 1021021-78-2 is a valid CAS Registry Number.