40423-68-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40423-68-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,4,2 and 3 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 40423-68:
(7*4)+(6*0)+(5*4)+(4*2)+(3*3)+(2*6)+(1*8)=85
85 % 10 = 5
So 40423-68-5 is a valid CAS Registry Number.