31994-13-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31994-13-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,9,9 and 4 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 31994-13:
(7*3)+(6*1)+(5*9)+(4*9)+(3*4)+(2*1)+(1*3)=125
125 % 10 = 5
So 31994-13-5 is a valid CAS Registry Number.