131139-78-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131139-78-1 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 9 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 131139-78:
(8*1)+(7*3)+(6*1)+(5*1)+(4*3)+(3*9)+(2*7)+(1*8)=101
101 % 10 = 1
So 131139-78-1 is a valid CAS Registry Number.