109821-06-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109821-06-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,8,2 and 1 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 109821-06:
(8*1)+(7*0)+(6*9)+(5*8)+(4*2)+(3*1)+(2*0)+(1*6)=119
119 % 10 = 9
So 109821-06-9 is a valid CAS Registry Number.