75646-80-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 75646-80-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,6,4 and 6 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 75646-80:
(7*7)+(6*5)+(5*6)+(4*4)+(3*6)+(2*8)+(1*0)=159
159 % 10 = 9
So 75646-80-9 is a valid CAS Registry Number.