220423-84-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220423-84-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,4,2 and 3 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 220423-84:
(8*2)+(7*2)+(6*0)+(5*4)+(4*2)+(3*3)+(2*8)+(1*4)=87
87 % 10 = 7
So 220423-84-7 is a valid CAS Registry Number.