7746-54-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7746-54-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,4 and 6 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 7746-54:
(6*7)+(5*7)+(4*4)+(3*6)+(2*5)+(1*4)=125
125 % 10 = 5
So 7746-54-5 is a valid CAS Registry Number.