7499-80-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7499-80-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,9 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 7499-80:
(6*7)+(5*4)+(4*9)+(3*9)+(2*8)+(1*0)=141
141 % 10 = 1
So 7499-80-1 is a valid CAS Registry Number.