33421-07-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33421-07-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,4,2 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 33421-07:
(7*3)+(6*3)+(5*4)+(4*2)+(3*1)+(2*0)+(1*7)=77
77 % 10 = 7
So 33421-07-7 is a valid CAS Registry Number.