839-44-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 839-44-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,3 and 9 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 839-44:
(5*8)+(4*3)+(3*9)+(2*4)+(1*4)=91
91 % 10 = 1
So 839-44-1 is a valid CAS Registry Number.