123809-78-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123809-78-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,8,0 and 9 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 123809-78:
(8*1)+(7*2)+(6*3)+(5*8)+(4*0)+(3*9)+(2*7)+(1*8)=129
129 % 10 = 9
So 123809-78-9 is a valid CAS Registry Number.