191408-20-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 191408-20-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,4,0 and 8 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 191408-20:
(8*1)+(7*9)+(6*1)+(5*4)+(4*0)+(3*8)+(2*2)+(1*0)=125
125 % 10 = 5
So 191408-20-5 is a valid CAS Registry Number.