31402-16-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31402-16-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,4,0 and 2 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 31402-16:
(7*3)+(6*1)+(5*4)+(4*0)+(3*2)+(2*1)+(1*6)=61
61 % 10 = 1
So 31402-16-1 is a valid CAS Registry Number.