220495-56-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 220495-56-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,4,9 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 220495-56:
(8*2)+(7*2)+(6*0)+(5*4)+(4*9)+(3*5)+(2*5)+(1*6)=117
117 % 10 = 7
So 220495-56-7 is a valid CAS Registry Number.