778523-09-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 778523-09-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,7,8,5,2 and 3 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 778523-09:
(8*7)+(7*7)+(6*8)+(5*5)+(4*2)+(3*3)+(2*0)+(1*9)=204
204 % 10 = 4
So 778523-09-4 is a valid CAS Registry Number.