33403-21-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33403-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,4,0 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 33403-21:
(7*3)+(6*3)+(5*4)+(4*0)+(3*3)+(2*2)+(1*1)=73
73 % 10 = 3
So 33403-21-3 is a valid CAS Registry Number.