189693-80-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 189693-80-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,6,9 and 3 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 189693-80:
(8*1)+(7*8)+(6*9)+(5*6)+(4*9)+(3*3)+(2*8)+(1*0)=209
209 % 10 = 9
So 189693-80-9 is a valid CAS Registry Number.