871890-31-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 871890-31-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,1,8,9 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 871890-31:
(8*8)+(7*7)+(6*1)+(5*8)+(4*9)+(3*0)+(2*3)+(1*1)=202
202 % 10 = 2
So 871890-31-2 is a valid CAS Registry Number.