33998-17-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33998-17-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,9,9 and 8 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 33998-17:
(7*3)+(6*3)+(5*9)+(4*9)+(3*8)+(2*1)+(1*7)=153
153 % 10 = 3
So 33998-17-3 is a valid CAS Registry Number.