31438-02-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31438-02-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,4,3 and 8 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 31438-02:
(7*3)+(6*1)+(5*4)+(4*3)+(3*8)+(2*0)+(1*2)=85
85 % 10 = 5
So 31438-02-5 is a valid CAS Registry Number.