20964-99-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20964-99-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,9,6 and 4 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 20964-99:
(7*2)+(6*0)+(5*9)+(4*6)+(3*4)+(2*9)+(1*9)=122
122 % 10 = 2
So 20964-99-2 is a valid CAS Registry Number.