4550-17-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4550-17-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,5,5 and 0 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 4550-17:
(6*4)+(5*5)+(4*5)+(3*0)+(2*1)+(1*7)=78
78 % 10 = 8
So 4550-17-8 is a valid CAS Registry Number.