31331-25-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31331-25-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,3,3 and 1 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 31331-25:
(7*3)+(6*1)+(5*3)+(4*3)+(3*1)+(2*2)+(1*5)=66
66 % 10 = 6
So 31331-25-6 is a valid CAS Registry Number.