71-02-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71-02-3 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 7 and 1 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 71-02:
(4*7)+(3*1)+(2*0)+(1*2)=33
33 % 10 = 3
So 71-02-3 is a valid CAS Registry Number.