131269-53-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131269-53-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,2,6 and 9 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 131269-53:
(8*1)+(7*3)+(6*1)+(5*2)+(4*6)+(3*9)+(2*5)+(1*3)=109
109 % 10 = 9
So 131269-53-9 is a valid CAS Registry Number.