57740-40-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57740-40-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,4 and 0 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 57740-40:
(7*5)+(6*7)+(5*7)+(4*4)+(3*0)+(2*4)+(1*0)=136
136 % 10 = 6
So 57740-40-6 is a valid CAS Registry Number.