131131-26-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131131-26-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,1,3 and 1 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 131131-26:
(8*1)+(7*3)+(6*1)+(5*1)+(4*3)+(3*1)+(2*2)+(1*6)=65
65 % 10 = 5
So 131131-26-5 is a valid CAS Registry Number.