1097811-16-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1097811-16-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,9,7,8,1 and 1 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1097811-16:
(9*1)+(8*0)+(7*9)+(6*7)+(5*8)+(4*1)+(3*1)+(2*1)+(1*6)=169
169 % 10 = 9
So 1097811-16-9 is a valid CAS Registry Number.