205749-77-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 205749-77-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,7,4 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 205749-77:
(8*2)+(7*0)+(6*5)+(5*7)+(4*4)+(3*9)+(2*7)+(1*7)=145
145 % 10 = 5
So 205749-77-5 is a valid CAS Registry Number.