57065-77-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57065-77-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,0,6 and 5 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 57065-77:
(7*5)+(6*7)+(5*0)+(4*6)+(3*5)+(2*7)+(1*7)=137
137 % 10 = 7
So 57065-77-7 is a valid CAS Registry Number.