30403-81-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 30403-81-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,0,4,0 and 3 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 30403-81:
(7*3)+(6*0)+(5*4)+(4*0)+(3*3)+(2*8)+(1*1)=67
67 % 10 = 7
So 30403-81-7 is a valid CAS Registry Number.