5757-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 5757-91-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,7,5 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5757-91:
(6*5)+(5*7)+(4*5)+(3*7)+(2*9)+(1*1)=125
125 % 10 = 5
So 5757-91-5 is a valid CAS Registry Number.