1211108-21-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1211108-21-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,1,1,0 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1211108-21:
(9*1)+(8*2)+(7*1)+(6*1)+(5*1)+(4*0)+(3*8)+(2*2)+(1*1)=72
72 % 10 = 2
So 1211108-21-2 is a valid CAS Registry Number.