33821-43-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33821-43-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,8,2 and 1 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 33821-43:
(7*3)+(6*3)+(5*8)+(4*2)+(3*1)+(2*4)+(1*3)=101
101 % 10 = 1
So 33821-43-1 is a valid CAS Registry Number.