4685-16-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4685-16-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,6,8 and 5 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 4685-16:
(6*4)+(5*6)+(4*8)+(3*5)+(2*1)+(1*6)=109
109 % 10 = 9
So 4685-16-9 is a valid CAS Registry Number.