121055-90-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121055-90-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,0,5 and 5 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 121055-90:
(8*1)+(7*2)+(6*1)+(5*0)+(4*5)+(3*5)+(2*9)+(1*0)=81
81 % 10 = 1
So 121055-90-1 is a valid CAS Registry Number.