105157-81-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 105157-81-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,1,5 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 105157-81:
(8*1)+(7*0)+(6*5)+(5*1)+(4*5)+(3*7)+(2*8)+(1*1)=101
101 % 10 = 1
So 105157-81-1 is a valid CAS Registry Number.