1428421-81-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1428421-81-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,8,4,2 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1428421-81:
(9*1)+(8*4)+(7*2)+(6*8)+(5*4)+(4*2)+(3*1)+(2*8)+(1*1)=151
151 % 10 = 1
So 1428421-81-1 is a valid CAS Registry Number.