3944-42-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3944-42-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,9,4 and 4 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 3944-42:
(6*3)+(5*9)+(4*4)+(3*4)+(2*4)+(1*2)=101
101 % 10 = 1
So 3944-42-1 is a valid CAS Registry Number.