15806-81-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 15806-81-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,8,0 and 6 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 15806-81:
(7*1)+(6*5)+(5*8)+(4*0)+(3*6)+(2*8)+(1*1)=112
112 % 10 = 2
So 15806-81-2 is a valid CAS Registry Number.