39940-81-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 39940-81-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,9,4 and 0 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 39940-81:
(7*3)+(6*9)+(5*9)+(4*4)+(3*0)+(2*8)+(1*1)=153
153 % 10 = 3
So 39940-81-3 is a valid CAS Registry Number.