77509-04-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77509-04-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,5,0 and 9 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 77509-04:
(7*7)+(6*7)+(5*5)+(4*0)+(3*9)+(2*0)+(1*4)=147
147 % 10 = 7
So 77509-04-7 is a valid CAS Registry Number.