1688666-41-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1688666-41-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,8,8,6,6 and 6 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1688666-41:
(9*1)+(8*6)+(7*8)+(6*8)+(5*6)+(4*6)+(3*6)+(2*4)+(1*1)=242
242 % 10 = 2
So 1688666-41-2 is a valid CAS Registry Number.