81129-18-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81129-18-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,1,2 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 81129-18:
(7*8)+(6*1)+(5*1)+(4*2)+(3*9)+(2*1)+(1*8)=112
112 % 10 = 2
So 81129-18-2 is a valid CAS Registry Number.