31880-39-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31880-39-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,8,8 and 0 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 31880-39:
(7*3)+(6*1)+(5*8)+(4*8)+(3*0)+(2*3)+(1*9)=114
114 % 10 = 4
So 31880-39-4 is a valid CAS Registry Number.