31897-35-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31897-35-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,8,9 and 7 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 31897-35:
(7*3)+(6*1)+(5*8)+(4*9)+(3*7)+(2*3)+(1*5)=135
135 % 10 = 5
So 31897-35-5 is a valid CAS Registry Number.