If a disregarded entity that is reported on schedule C, you and the business are the same; it's money and property are your money and property. If you did not deduct the cost of inventory as a business expense, then you can deduct the donation as a schedule A itemized deduction (but remembering the requirement for an appraisal and a signed form 8283).
However, it may still be to your advantage to deduct the costs as inventory on schedule C rather than as a charity deduction on schedule A. If you deduct the full inventory cost on schedule C, you may show a net operating loss for your business; that may be deductible against other income now or in the future. Your schedule A itemized deduction will be limited by the fact that the standard deduction has doubled ($12,000 single, $24,000 married filing jointly) so your only benefit comes from the amount that your itemized deductions are more than the standard deduction.
You may want to run the situation past a tax professional (not a storefront seasonal tax preparer.)
