34-03-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 34-03-7 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 3 and 4 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 34-03:
(4*3)+(3*4)+(2*0)+(1*3)=27
27 % 10 = 7
So 34-03-7 is a valid CAS Registry Number.