823-65-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 823-65-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,2 and 3 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 823-65:
(5*8)+(4*2)+(3*3)+(2*6)+(1*5)=74
74 % 10 = 4
So 823-65-4 is a valid CAS Registry Number.