105231-56-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 105231-56-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,2,3 and 1 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 105231-56:
(8*1)+(7*0)+(6*5)+(5*2)+(4*3)+(3*1)+(2*5)+(1*6)=79
79 % 10 = 9
So 105231-56-9 is a valid CAS Registry Number.