331944-57-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 331944-57-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,9,4 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 331944-57:
(8*3)+(7*3)+(6*1)+(5*9)+(4*4)+(3*4)+(2*5)+(1*7)=141
141 % 10 = 1
So 331944-57-1 is a valid CAS Registry Number.