121200-19-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121200-19-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,2,0 and 0 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 121200-19:
(8*1)+(7*2)+(6*1)+(5*2)+(4*0)+(3*0)+(2*1)+(1*9)=49
49 % 10 = 9
So 121200-19-9 is a valid CAS Registry Number.