400771-20-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 400771-20-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,0,7,7 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 400771-20:
(8*4)+(7*0)+(6*0)+(5*7)+(4*7)+(3*1)+(2*2)+(1*0)=102
102 % 10 = 2
So 400771-20-2 is a valid CAS Registry Number.