133189-66-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133189-66-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,1,8 and 9 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 133189-66:
(8*1)+(7*3)+(6*3)+(5*1)+(4*8)+(3*9)+(2*6)+(1*6)=129
129 % 10 = 9
So 133189-66-9 is a valid CAS Registry Number.