2149-40-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2149-40-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,4 and 9 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 2149-40:
(6*2)+(5*1)+(4*4)+(3*9)+(2*4)+(1*0)=68
68 % 10 = 8
So 2149-40-8 is a valid CAS Registry Number.