74944-81-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74944-81-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,9,4 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 74944-81:
(7*7)+(6*4)+(5*9)+(4*4)+(3*4)+(2*8)+(1*1)=163
163 % 10 = 3
So 74944-81-3 is a valid CAS Registry Number.