64839-99-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 64839-99-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,8,3 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 64839-99:
(7*6)+(6*4)+(5*8)+(4*3)+(3*9)+(2*9)+(1*9)=172
172 % 10 = 2
So 64839-99-2 is a valid CAS Registry Number.