4720-74-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4720-74-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,7,2 and 0 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 4720-74:
(6*4)+(5*7)+(4*2)+(3*0)+(2*7)+(1*4)=85
85 % 10 = 5
So 4720-74-5 is a valid CAS Registry Number.