191920-24-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 191920-24-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,9,2 and 0 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 191920-24:
(8*1)+(7*9)+(6*1)+(5*9)+(4*2)+(3*0)+(2*2)+(1*4)=138
138 % 10 = 8
So 191920-24-8 is a valid CAS Registry Number.