U.S. imports of Heterocyclic Compounds with Phenothiazine Ring System (HS 293430) totaled $1.0M in August 2026, imported from 12 countries.
Importers of Heterocyclic Compounds with Phenothiazine Ring System paid $1K in duties in August 2026, an average duty rate of 0.12% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataPhenothiazine-ring compounds occupy a critical position in the pharmaceutical supply chain, serving as the structural backbone for antipsychotics, antihistamines, and antiemetics. The US schedule subdivides this heading into six tariff lines, distinguishing named drugs such as chlorpromazine and butaperazine maleate (2934301000) from broader categories of antidepressants and tranquilizers (2934302300), non-drug industrial compounds (2934305050), and products subject to US Note 3 to Section VI (2934304300). Germany leads supply into the US market, followed by China and Ireland, reflecting the concentration of active pharmaceutical ingredient manufacturing in European and Asian chemical hubs. Importers should verify FDA drug registration status and DEA scheduling for any controlled substances within this heading before shipment.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
15 import shipments a month
The schedule separates named pharmaceutical substances (e.g., chlorpromazine under 2934301000), broader psychoactive drug categories (2934302300), and drugs not elsewhere specified (2934302700) from purely industrial or non-drug compounds (2934305050). Importers must confirm the intended end-use and chemical identity to select the correct line, as misclassification between drug and non-drug provisions can affect both duty rate and FDA admissibility requirements.
Shipments of phenothiazine APIs intended for drug manufacture generally require an FDA Drug Master File or import alert clearance, and any substance with controlled-substance potential must comply with DEA import permit requirements. Consult a licensed customs broker and confirm FDA establishment registration before the first shipment.
ImportsExports
Imports
$1.0MYoY · free account
Exports
$38KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $12.5M of Heterocyclic Compounds with Phenothiazine Ring System and exported $1.3M.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Germany and China together supply 94% of it. France pays 10.0% duty; China 0.0%.
customs district
destination
entry
rate provision · imports
98.9% enters free of duty; duty collected equals 0.12% of imports for consumption.
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 | Duty Collected |
|---|---|---|---|---|---|
| 2934305000 | Other Cmpds Cont A Phenothiazine Ring System Etc | $950K | 0.08% | 0.78% | $739 |
| 2934302700 | Drugs W/ A Pheno Ring Sys (W/T Hydro), NESOI | $52K | 0.00% | 0.00% | -- |
| 2934304300 | Prod in U.S. Note 3 to Sec 6 Cont A Phenothiaz Etc | $13K | 3.39% | 33.94% | $436 |
| 2934302300 | Antidepressants, Tranquilizers and Other Psch Agts | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
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.
Trade Directory
List your company under HS 293430 — Heterocyclic Compounds with Phenothiazine Ring System, so the companies trading it can find you. Be the first supplier listed.
Subheading 4 of 6 in heading 2934
Subheading 293430 · $1.0M of $324.9M