1220028-34-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1220028-34-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,0,0,2 and 8 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1220028-34:
(9*1)+(8*2)+(7*2)+(6*0)+(5*0)+(4*2)+(3*8)+(2*3)+(1*4)=81
81 % 10 = 1
So 1220028-34-1 is a valid CAS Registry Number.