400820-15-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 400820-15-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,0,8,2 and 0 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 400820-15:
(8*4)+(7*0)+(6*0)+(5*8)+(4*2)+(3*0)+(2*1)+(1*5)=87
87 % 10 = 7
So 400820-15-7 is a valid CAS Registry Number.