121143-61-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121143-61-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,1,4 and 3 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 121143-61:
(8*1)+(7*2)+(6*1)+(5*1)+(4*4)+(3*3)+(2*6)+(1*1)=71
71 % 10 = 1
So 121143-61-1 is a valid CAS Registry Number.