40656-45-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40656-45-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,6,5 and 6 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 40656-45:
(7*4)+(6*0)+(5*6)+(4*5)+(3*6)+(2*4)+(1*5)=109
109 % 10 = 9
So 40656-45-9 is a valid CAS Registry Number.