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Dexbrompheniramine maleate

Drug ingredient

CAS 2391-03-9

This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.

Molecular structure of 2391-03-9
US productionNot reported
Import value, 2024$1.3B
Top sourceChina 32%

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293339 · basket

These shares come from HS customs code 293339, which covers 397 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 32%ChinaIN 15%IndiaDE 10%GermanyBE 9%BelgiumCH 8%Switzerland
10 FDA-registered drug labelers
ACTIPHARMA, LLC
Dextrum Laboratories, Inc
Keshava Organics Pvt Ltd
Kramer Novis
Llorens Pharmaceutical International Division
LLORENS PHARMACEUTICALS INTERNATIONAL DIVISION
Poly Pharmaceuticals, Inc.
R. A. McNeil Company
Supriya Lifescience Limited
Westminster Pharmaceuticals, LLC

Why It Matters

Sectors
Health
Downstream Uses

Appears in 20 drug and cosmetic product listings (FDA).

  • •Durahist
  • •Duratuss AC
  • •Acticon Pediatric
  • •Acticon
  • •Conex
  • •Supress A
  • •Dologen
  • •Actidogesic DF
Show all 20
  • •ALA-HIST IR
  • •WesTussin DM NF
  • •Dologesic NF
  • •Dologesic DF
  • •Chlo Tuss
  • •G-Dologen
  • •M-END DMX
  • •Duratuss DM
  • •Conex Pediatric
  • •Chlo Hist
  • •Alahist PE
  • •Actidogesic
FDA Shortage Status
No FDA shortage records

Vendor Pricing

$2.11/gAaron Chemicals LLC
CountryHong Kong
Pack$211.00 / 100 g
Purity98%
Vendors3 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

2 more vendors
VendorCountry$/gPackPurity
AA BLOCKSUnited States$4.63100 g98%
Fulfilled by MolportLatvia$60.00100 mg98%

Chemical Identity

CAS2391-03-9
PubChem CID6433334
DTXSIDDTXSID6047818
FormulaC20H23BrN2O4
Mol. Weight435.3 g/mol
SMILESCN(C)CCC(C1=CC=C(C=C1)Br)C2=CC=CC=N2.C(=CC(=O)O)C(=O)O

Data Sources

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Brief citations

Dexbrompheniramine maleate (CAS 2391-03-9) https://chemicalindependence.com/chemical/2391-03-9/ PubChem: 6433334. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/6433334 FDA National Drug Code directory: CAS 2391-03-9. Retrieved 2026-04-25. https://open.fda.gov/data/ndc/ FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 293339 for CAS 2391-03-9. Reporting year: 2024. https://usatrade.census.gov/