81760-40-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81760-40-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,7,6 and 0 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81760-40:
(7*8)+(6*1)+(5*7)+(4*6)+(3*0)+(2*4)+(1*0)=129
129 % 10 = 9
So 81760-40-9 is a valid CAS Registry Number.