1220428-56-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1220428-56-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,0,4,2 and 8 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1220428-56:
(9*1)+(8*2)+(7*2)+(6*0)+(5*4)+(4*2)+(3*8)+(2*5)+(1*6)=107
107 % 10 = 7
So 1220428-56-7 is a valid CAS Registry Number.