33997-22-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33997-22-7 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 7 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 33997-22:
(7*3)+(6*3)+(5*9)+(4*9)+(3*7)+(2*2)+(1*2)=147
147 % 10 = 7
So 33997-22-7 is a valid CAS Registry Number.