182120-42-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 182120-42-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,2,1,2 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 182120-42:
(8*1)+(7*8)+(6*2)+(5*1)+(4*2)+(3*0)+(2*4)+(1*2)=99
99 % 10 = 9
So 182120-42-9 is a valid CAS Registry Number.