70939-44-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 70939-44-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,9,3 and 9 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 70939-44:
(7*7)+(6*0)+(5*9)+(4*3)+(3*9)+(2*4)+(1*4)=145
145 % 10 = 5
So 70939-44-5 is a valid CAS Registry Number.