16620-95-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16620-95-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,6,2 and 0 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 16620-95:
(7*1)+(6*6)+(5*6)+(4*2)+(3*0)+(2*9)+(1*5)=104
104 % 10 = 4
So 16620-95-4 is a valid CAS Registry Number.