131138-45-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131138-45-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,1,3 and 8 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 131138-45:
(8*1)+(7*3)+(6*1)+(5*1)+(4*3)+(3*8)+(2*4)+(1*5)=89
89 % 10 = 9
So 131138-45-9 is a valid CAS Registry Number.