6565-88-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6565-88-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,5,6 and 5 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 6565-88:
(6*6)+(5*5)+(4*6)+(3*5)+(2*8)+(1*8)=124
124 % 10 = 4
So 6565-88-4 is a valid CAS Registry Number.