57774-20-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 57774-20-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,7,7 and 4 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 57774-20:
(7*5)+(6*7)+(5*7)+(4*7)+(3*4)+(2*2)+(1*0)=156
156 % 10 = 6
So 57774-20-6 is a valid CAS Registry Number.