69909-09-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 69909-09-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,9,0 and 9 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 69909-09:
(7*6)+(6*9)+(5*9)+(4*0)+(3*9)+(2*0)+(1*9)=177
177 % 10 = 7
So 69909-09-7 is a valid CAS Registry Number.