220384-42-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220384-42-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,3,8 and 4 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 220384-42:
(8*2)+(7*2)+(6*0)+(5*3)+(4*8)+(3*4)+(2*4)+(1*2)=99
99 % 10 = 9
So 220384-42-9 is a valid CAS Registry Number.