U.S. imports of Erythromycin and Its Derivatives; Salts Thereof (HS 294150) totaled $410K in September 2026, imported from 4 countries.
Erythromycin and Its Derivatives; Salts Thereof imports of $410K in September 2026 ran 39% below the year-to-date monthly average of $674K.
Last updated: September 2026 dataErythromycin is a macrolide antibiotic and the biosynthetic precursor to widely used semi-synthetic derivatives such as azithromycin and clarithromycin, making this heading commercially significant for both finished-drug manufacturers and API traders. Imports under 2941500000 — the sole 10-digit line — are subject to FDA cGMP requirements and foreign facility registration. China and India are the leading suppliers, reflecting their dominant role in macrolide fermentation and semi-synthesis; Spain rounds out the top three sources. Shipments of Chinese origin may carry Section 301 tariff liability, a cost factor that has prompted some buyers to evaluate Indian and Spanish alternatives.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1 import shipments a month
Azithromycin and clarithromycin are semi-synthetic macrolides derived from erythromycin, but their classification depends on their specific chemical structure. Customs authorities and FDA may classify them under 294150 or elsewhere in Chapter 29 depending on the degree of structural modification; importers should seek a binding ruling or consult a licensed customs broker before assuming classification.
Concentration of fermentation capacity in China and India creates single-source risk, particularly during periods of raw material shortages or regulatory enforcement actions. Section 301 tariffs on Chinese-origin APIs add a cost layer that can shift sourcing economics toward Indian or European suppliers, though lead times and minimum order quantities may differ significantly.
Trade Directory
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Subheading 4 of 6 in heading 2941
Subheading 294150 · $410K of $42.5M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share |
|---|---|---|---|---|
| 2941500000 | Erythromycin and Its Derivatives; Salts Thereof | $348K | 0.00% | 0.00% |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2941500000 | Erythromycin and Its Derivatives; Salts Thereof | $871K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$410KYoY · free account
Exports
—YoY · free account
12-mo low · imports
Low · free accountOver the twelve months to September 2026, the U.S. imported $6.9M of Erythromycin and Its Derivatives; Salts Thereof.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through September 2026 · exports 11 of 12 months reported. Source: U.S. Census Bureau.
Imports · September 2026
origin
China and Switzerland together supply 100% of it.
customs district
destination
entry
rate provision · imports
100.0% enters free of duty; duty collected equals 0.00% of imports for consumption.