221366-30-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 221366-30-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,3,6 and 6 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 221366-30:
(8*2)+(7*2)+(6*1)+(5*3)+(4*6)+(3*6)+(2*3)+(1*0)=99
99 % 10 = 9
So 221366-30-9 is a valid CAS Registry Number.