5278-65-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5278-65-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,2,7 and 8 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 5278-65:
(6*5)+(5*2)+(4*7)+(3*8)+(2*6)+(1*5)=109
109 % 10 = 9
So 5278-65-9 is a valid CAS Registry Number.