57991-51-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57991-51-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,9,9 and 1 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 57991-51:
(7*5)+(6*7)+(5*9)+(4*9)+(3*1)+(2*5)+(1*1)=172
172 % 10 = 2
So 57991-51-2 is a valid CAS Registry Number.