117940-18-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 117940-18-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,9,4 and 0 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 117940-18:
(8*1)+(7*1)+(6*7)+(5*9)+(4*4)+(3*0)+(2*1)+(1*8)=128
128 % 10 = 8
So 117940-18-8 is a valid CAS Registry Number.