Note 3 - Major Customers and Suppliers

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Major Customers and Suppliers Disclosure [Text Block]

(

3

) MAJOR CUSTOMERS AND SUPPLIERS:

Our revenues are derived primarily from chemical supply and pharmaceutical companies located primarily in the United States. In

2018,

four

major customers accounted for

57%

of total revenues. Accounts receivable balances for these major customers represent

31%

of total accounts receivable at

December 31, 2018.

In

2017,

three

major customers accounted for

59%

of total revenues. Accounts receivable balances for these major customers represent

27%

of total accounts receivable at

December 31, 2017. 

Substantially all inventory purchases were from

three

vendors in

2018

and

2017.

These vendors are located primarily outside the United States.

We have

three

sources for our Aquaplex® products. There are multiple sources for our Trappsol

®

products.

For the year ended

December 31, 2018,

the product mix of our revenues consisted of

17%

biopharmaceuticals,

71%

basic natural and chemically modified cyclodextrins, and

12%

cyclodextrin complexes. For the year ended

December 31, 2017,

the product mix of our revenues consisted of

28%

biopharmaceuticals,

71%

basic natural and chemically modified cyclodextrins, and

1%

cyclodextrin complexes.