21331-06-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21331-06-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,3,3 and 1 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 21331-06:
(7*2)+(6*1)+(5*3)+(4*3)+(3*1)+(2*0)+(1*6)=56
56 % 10 = 6
So 21331-06-6 is a valid CAS Registry Number.