57811-90-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57811-90-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,8,1 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 57811-90:
(7*5)+(6*7)+(5*8)+(4*1)+(3*1)+(2*9)+(1*0)=142
142 % 10 = 2
So 57811-90-2 is a valid CAS Registry Number.