Loading...
U.S. imports of theophylline, aminophylline & their derivatives and salts (HS 293959) totaled $70K in July 2026, traded with 5 countries.
Theophylline, Aminophylline & Their Derivatives and Salts imports of $70K in July 2026 ran 73% below the year-to-date monthly average of $259K.
Last updated: July 2026 dataTheophylline and aminophylline are xanthine-class bronchodilator APIs used in respiratory therapeutics, and their derivatives and salts enter under a single tariff line (2939590000). India and China are the leading suppliers, with Italy, Germany, and the Netherlands also contributing to US import flows. FDA entry review applies because these substances are active pharmaceutical ingredients subject to cGMP requirements; importers must ensure the foreign manufacturer holds an FDA Drug Establishment Registration and that each lot is accompanied by appropriate certificates of analysis. Supply-chain concentration among a handful of Asian API producers makes quality-system audits a critical risk-management tool.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
2 shipments/mo
Foreign establishments that manufacture, process, pack, or hold drug substances for US import must register with FDA under the Drug Establishment Registration program and list their drug products. Shipments from unregistered facilities are subject to refusal of admission.
Aminophylline is a theophylline-ethylenediamine complex, while other derivatives may be distinct salts or chemical modifications. All fall under 2939590000 as long as they are derivatives or salts of theophylline or aminophylline not more specifically provided for elsewhere; importers with novel derivatives should seek a binding ruling to confirm classification.
HSChapter 29
Subheading 10 of 18 in heading 2939
Subheading 293959 · $70K of $55.3M
Supplier Network
Get discovered by U.S. importers searching for HS 293959 — Theophylline, Aminophylline & Their Derivatives and Salts. Be the first supplier listed.
ImportsExports
Imports
$70KYoY · Pro
Exports
$20KYoY · Pro
12-mo low · imports
YoY · ProFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through 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 |
|---|---|---|---|---|
| 2939590000 | Theophylline & Aminophylline & Derivs, Salts NESOI | $70K | 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 |
|---|---|---|
| 2939590000 | Theophylline & Aminophylline & Derivs, Salts NESOI | $20K |
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.
Imports · July 2026
origin
Italy and India together supply 100% of it.
customs district
destination
entry
rate provision · imports
100.0% enters free of duty; the effective duty rate is 0.00%.