19809-68-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19809-68-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,8,0 and 9 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 19809-68:
(7*1)+(6*9)+(5*8)+(4*0)+(3*9)+(2*6)+(1*8)=148
148 % 10 = 8
So 19809-68-8 is a valid CAS Registry Number.