104939-43-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 104939-43-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,4,9,3 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 104939-43:
(8*1)+(7*0)+(6*4)+(5*9)+(4*3)+(3*9)+(2*4)+(1*3)=127
127 % 10 = 7
So 104939-43-7 is a valid CAS Registry Number.