777904-56-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 777904-56-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,7,7,9,0 and 4 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 777904-56:
(8*7)+(7*7)+(6*7)+(5*9)+(4*0)+(3*4)+(2*5)+(1*6)=220
220 % 10 = 0
So 777904-56-0 is a valid CAS Registry Number.