Harmonized System
U.S. imports of Aromatic Monocarboxylic Acids and Derivatives, NESOI (HS 291639) totaled $3.6M in August 2026, imported from 24 countries.
Importers of Aromatic Monocarboxylic Acids and Derivatives, NESOI paid $606K in duties in August 2026, an average duty rate of 16.29% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Aromatic Monocarboxylic Acids and Derivatives, NESOI imports of $3.6M in August 2026 ran 15% below the year-to-date monthly average of $4.2M.
Last updated: August 2026 dataIbuprofen — classified at 2916391500 — is the most commercially prominent named compound in this residual aromatic monocarboxylic acid heading, and its import as a pharmaceutical active ingredient triggers FDA drug establishment registration and cGMP compliance requirements. China is the leading supplier across this heading, followed by Italy and India; Section 301 tariffs apply to Chinese-origin goods, a material cost factor for pharmaceutical and specialty chemical buyers. The heading also captures cinnamic acid (2916390600), used in fragrance and UV-filter applications, and several reactive intermediates including benzoic anhydride and tert-butyl peroxybenzoate (2916390300), which serve as acylating agents and polymerization initiators respectively.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
94 import shipments a month
Ibuprofen imported as a drug active pharmaceutical ingredient (API) is subject to FDA's drug cGMP regulations. The foreign manufacturing site must be registered with FDA, listed in the Drug Establishment Registration database, and subject to FDA inspection. The importer of record should also hold a valid drug establishment registration if it performs any manufacturing steps. Classification and admissibility are complex; consult a licensed customs broker or FDA's Office of Pharmaceutical Quality before importing.
The NESOI (not elsewhere specified or included) designation means this heading applies only after ruling out all more specific Chapter 29 provisions. Importers should work through the relevant chapter notes and, for compounds with pharmaceutical or agrochemical end uses, consider whether a more specific heading (e.g., for heterocyclic compounds or hormones) might apply. A CBP binding ruling is advisable for novel intermediates where classification is genuinely ambiguous.
Subheading 7 of 12 in heading 2916
Subheading 291639 · $3.6M of $75.8M
ImportsExports
Imports
$3.6MYoY · free account
Exports
$4.0MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $65.7M of Aromatic Monocarboxylic Acids and Derivatives, NESOI and exported $44.0M.
Through August 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 | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2916391500 | Ibuprofen | $2.1M | 14.67% | 100.00% | $302K |
| 2916392100 | Odoriferous or Flavor Cmpds of Arom Monocar Acids | $1.0M | 18.94% | 100.00% | $195K |
| 2916397900 | Aromatic Monocarboxy Acids Their Der Etc, Other | $579K | 16.73% | 98.66% | $97K |
| 2916394600 | Prod Des in Additional U.S. Note 3 to Sect VI | $25K | 9.86% | 100.00% | $2K |
| 2916397700 | Esters of Phenylacetic Acid, NESOI | $11K | 37.50% | 100.00% | $4K |
| 2916390600 | Cinnamic Acid | $11K | 44.00% | 100.00% | $5K |
| 2916390400 | M-Chloroperoxybenzoic Acid; P-Sulfobenzoic Acid | $3K | 9.98% | 100.00% | $253 |
| 2916391700 | 2,2-Dichlorophenylacetic Acid Ethyl Ester Etc.. | — | -- | -- | -- |
| 2916390800 | 4-Chloro-3-Nitrobenzoic Acid | — | -- | -- | -- |
| 2916390300 | Benzoic Anhydride; Tert-Butyl Peroxybenzoate; Etc | — | -- | -- | -- |
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.
Imports · August 2026
origin
China and Thailand together supply 87% of it. Thailand pays 19.0% duty; Norway 0.0%.
customs district
destination
entry
rate provision · imports
0.2% enters free of duty; duty collected equals 16.29% of imports for consumption.
Trade Directory
List your company under HS 291639 — Aromatic Monocarboxylic Acids and Derivatives, NESOI, so the companies trading it can find you. Be the first supplier listed.