128685-78-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128685-78-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,8 and 5 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 128685-78:
(8*1)+(7*2)+(6*8)+(5*6)+(4*8)+(3*5)+(2*7)+(1*8)=169
169 % 10 = 9
So 128685-78-9 is a valid CAS Registry Number.