916891-91-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 916891-91-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,6,8,9 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 916891-91:
(8*9)+(7*1)+(6*6)+(5*8)+(4*9)+(3*1)+(2*9)+(1*1)=213
213 % 10 = 3
So 916891-91-3 is a valid CAS Registry Number.