1695-66-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1695-66-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,6,9 and 5 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1695-66:
(6*1)+(5*6)+(4*9)+(3*5)+(2*6)+(1*6)=105
105 % 10 = 5
So 1695-66-5 is a valid CAS Registry Number.