40815-23-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40815-23-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,8,1 and 5 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 40815-23:
(7*4)+(6*0)+(5*8)+(4*1)+(3*5)+(2*2)+(1*3)=94
94 % 10 = 4
So 40815-23-4 is a valid CAS Registry Number.