1030421-87-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1030421-87-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,3,0,4,2 and 1 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1030421-87:
(9*1)+(8*0)+(7*3)+(6*0)+(5*4)+(4*2)+(3*1)+(2*8)+(1*7)=84
84 % 10 = 4
So 1030421-87-4 is a valid CAS Registry Number.