577761-72-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 577761-72-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,7,7,7,6 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 577761-72:
(8*5)+(7*7)+(6*7)+(5*7)+(4*6)+(3*1)+(2*7)+(1*2)=209
209 % 10 = 9
So 577761-72-9 is a valid CAS Registry Number.