33531-84-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33531-84-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,5,3 and 1 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 33531-84:
(7*3)+(6*3)+(5*5)+(4*3)+(3*1)+(2*8)+(1*4)=99
99 % 10 = 9
So 33531-84-9 is a valid CAS Registry Number.