40638-56-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40638-56-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,6,3 and 8 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 40638-56:
(7*4)+(6*0)+(5*6)+(4*3)+(3*8)+(2*5)+(1*6)=110
110 % 10 = 0
So 40638-56-0 is a valid CAS Registry Number.