57820-45-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57820-45-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,8,2 and 0 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 57820-45:
(7*5)+(6*7)+(5*8)+(4*2)+(3*0)+(2*4)+(1*5)=138
138 % 10 = 8
So 57820-45-8 is a valid CAS Registry Number.