65838-64-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 65838-64-4 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 8 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 65838-64:
(7*6)+(6*5)+(5*8)+(4*3)+(3*8)+(2*6)+(1*4)=164
164 % 10 = 4
So 65838-64-4 is a valid CAS Registry Number.