3373-20-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3373-20-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,3,7 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 3373-20:
(6*3)+(5*3)+(4*7)+(3*3)+(2*2)+(1*0)=74
74 % 10 = 4
So 3373-20-4 is a valid CAS Registry Number.