65021-01-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 65021-01-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,0,2 and 1 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 65021-01:
(7*6)+(6*5)+(5*0)+(4*2)+(3*1)+(2*0)+(1*1)=84
84 % 10 = 4
So 65021-01-4 is a valid CAS Registry Number.