566939-54-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 566939-54-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,6,6,9,3 and 9 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 566939-54:
(8*5)+(7*6)+(6*6)+(5*9)+(4*3)+(3*9)+(2*5)+(1*4)=216
216 % 10 = 6
So 566939-54-6 is a valid CAS Registry Number.