7389-80-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7389-80-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,3,8 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 7389-80:
(6*7)+(5*3)+(4*8)+(3*9)+(2*8)+(1*0)=132
132 % 10 = 2
So 7389-80-2 is a valid CAS Registry Number.