31139-60-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31139-60-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,1,3 and 9 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 31139-60:
(7*3)+(6*1)+(5*1)+(4*3)+(3*9)+(2*6)+(1*0)=83
83 % 10 = 3
So 31139-60-3 is a valid CAS Registry Number.