57613-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57613-21-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,6,1 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 57613-21:
(7*5)+(6*7)+(5*6)+(4*1)+(3*3)+(2*2)+(1*1)=125
125 % 10 = 5
So 57613-21-5 is a valid CAS Registry Number.