871918-91-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 871918-91-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,1,9,1 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 871918-91:
(8*8)+(7*7)+(6*1)+(5*9)+(4*1)+(3*8)+(2*9)+(1*1)=211
211 % 10 = 1
So 871918-91-1 is a valid CAS Registry Number.