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HSChapter 29
U.S. exports of erythromycin and its derivatives; salts thereof (HS 294150) totaled $6.5M in July 2026.
Erythromycin and Its Derivatives; Salts Thereof imports of $233K in July 2026 ran 62% below the year-to-date monthly average of $612K.
Erythromycin 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.
4 shipments/mo
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.
Subheading 5 of 6 in heading 2941
Subheading 294150 · $233K of $41.3M
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ImportsExports
Imports
$233KYoY · Pro
Exports
$6.5MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2941500000 | Erythromycin and Its Derivatives; Salts Thereof | $233K | 1.46% | 14.60% | $3K |
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 | $6.5M |
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.
Exports · July 2026
destination
Spain and Italy together take 98% of it.
customs district
origin
entry
rate provision · imports
85.4% enters free of duty; the effective duty rate is 1.46%.