109521-63-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109521-63-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,5,2 and 1 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 109521-63:
(8*1)+(7*0)+(6*9)+(5*5)+(4*2)+(3*1)+(2*6)+(1*3)=113
113 % 10 = 3
So 109521-63-3 is a valid CAS Registry Number.