2182-20-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2182-20-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,8 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 2182-20:
(6*2)+(5*1)+(4*8)+(3*2)+(2*2)+(1*0)=59
59 % 10 = 9
So 2182-20-9 is a valid CAS Registry Number.