128139-41-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128139-41-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,1,3 and 9 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 128139-41:
(8*1)+(7*2)+(6*8)+(5*1)+(4*3)+(3*9)+(2*4)+(1*1)=123
123 % 10 = 3
So 128139-41-3 is a valid CAS Registry Number.