77509-86-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77509-86-5 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, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 77509-86:
(7*7)+(6*7)+(5*5)+(4*0)+(3*9)+(2*8)+(1*6)=165
165 % 10 = 5
So 77509-86-5 is a valid CAS Registry Number.