191097-54-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 191097-54-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,0,9 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 191097-54:
(8*1)+(7*9)+(6*1)+(5*0)+(4*9)+(3*7)+(2*5)+(1*4)=148
148 % 10 = 8
So 191097-54-8 is a valid CAS Registry Number.