13659-07-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13659-07-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,6,5 and 9 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 13659-07:
(7*1)+(6*3)+(5*6)+(4*5)+(3*9)+(2*0)+(1*7)=109
109 % 10 = 9
So 13659-07-9 is a valid CAS Registry Number.