3389-44-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3389-44-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,3,8 and 9 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3389-44:
(6*3)+(5*3)+(4*8)+(3*9)+(2*4)+(1*4)=104
104 % 10 = 4
So 3389-44-4 is a valid CAS Registry Number.