1220030-42-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1220030-42-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,0,0,3 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1220030-42:
(9*1)+(8*2)+(7*2)+(6*0)+(5*0)+(4*3)+(3*0)+(2*4)+(1*2)=61
61 % 10 = 1
So 1220030-42-1 is a valid CAS Registry Number.