139424-18-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139424-18-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,4,2 and 4 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 139424-18:
(8*1)+(7*3)+(6*9)+(5*4)+(4*2)+(3*4)+(2*1)+(1*8)=133
133 % 10 = 3
So 139424-18-3 is a valid CAS Registry Number.