109089-21-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109089-21-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,0,8 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 109089-21:
(8*1)+(7*0)+(6*9)+(5*0)+(4*8)+(3*9)+(2*2)+(1*1)=126
126 % 10 = 6
So 109089-21-6 is a valid CAS Registry Number.