309963-65-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 309963-65-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,9,9,6 and 3 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 309963-65:
(8*3)+(7*0)+(6*9)+(5*9)+(4*6)+(3*3)+(2*6)+(1*5)=173
173 % 10 = 3
So 309963-65-3 is a valid CAS Registry Number.