33223-21-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33223-21-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,2,2 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 33223-21:
(7*3)+(6*3)+(5*2)+(4*2)+(3*3)+(2*2)+(1*1)=71
71 % 10 = 1
So 33223-21-1 is a valid CAS Registry Number.