16964-81-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16964-81-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,9,6 and 4 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 16964-81:
(7*1)+(6*6)+(5*9)+(4*6)+(3*4)+(2*8)+(1*1)=141
141 % 10 = 1
So 16964-81-1 is a valid CAS Registry Number.