987-61-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 987-61-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,8 and 7 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 987-61:
(5*9)+(4*8)+(3*7)+(2*6)+(1*1)=111
111 % 10 = 1
So 987-61-1 is a valid CAS Registry Number.