65839-12-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 65839-12-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,8,3 and 9 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 65839-12:
(7*6)+(6*5)+(5*8)+(4*3)+(3*9)+(2*1)+(1*2)=155
155 % 10 = 5
So 65839-12-5 is a valid CAS Registry Number.