1211538-44-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1211538-44-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,1,5,3 and 8 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1211538-44:
(9*1)+(8*2)+(7*1)+(6*1)+(5*5)+(4*3)+(3*8)+(2*4)+(1*4)=111
111 % 10 = 1
So 1211538-44-1 is a valid CAS Registry Number.