111238-20-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 111238-20-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,2,3 and 8 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 111238-20:
(8*1)+(7*1)+(6*1)+(5*2)+(4*3)+(3*8)+(2*2)+(1*0)=71
71 % 10 = 1
So 111238-20-1 is a valid CAS Registry Number.