121033-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121033-89-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,0,3 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 121033-89:
(8*1)+(7*2)+(6*1)+(5*0)+(4*3)+(3*3)+(2*8)+(1*9)=74
74 % 10 = 4
So 121033-89-4 is a valid CAS Registry Number.