131640-43-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131640-43-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,6,4 and 0 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 131640-43:
(8*1)+(7*3)+(6*1)+(5*6)+(4*4)+(3*0)+(2*4)+(1*3)=92
92 % 10 = 2
So 131640-43-2 is a valid CAS Registry Number.