Dapsone
Drug ingredientThis drug ingredient has classified U.S. production volumes. EPA withholds the number as confidential business information.
US ProductionCBI
Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.
Import Value$760M
Top SourceChina 33%
The EPA did not publish how much of this chemical companies made or imported, or marked that amount confidential. Without that volume, ACID cannot calculate import dependency.
Where It Comes From
Customs basis: HS 293090 · basket
These shares come from HS customs code 293090, which covers 111 chemicals in total. They estimate the bucket's origin mix, not this chemical specifically.
Source Countries
Country of origin for US imports, from Census customs data (2023).
CN 33%ChinaES 14%SpainCH 9%SwitzerlandIT 7%ItalyIN 7%India
- Israel
- Croatia
- Ukraine
- Slovakia
- United Arab Emirates
- Ireland
- Poland
- Lithuania
- Brazil
- Singapore
- Australia
- Armenia
- Hong Kong
- Vietnam
- Czech Republic
- Hungary
- Greece
- Russia
EPA-registered importers (4)
Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.
Dksh Holding Ag · CH Switzerland
Atul Usa
Dksh North America
Huntsman
45 FDA-registered drug labelers
Alembic Pharmaceuticals Inc.
Alembic Pharmaceuticals Limited
Allergan, Inc.
Almirall, LLC
Amneal Pharmaceuticals LLC
Amneal Pharmaceuticals NY LLC
ANI Pharmaceuticals, Inc.
Atul Ltd
Aurobindo Pharma Limited
AvKARE
AX Pharmaceutical Corp
Boswell Pharmacy Services LLC d/b/a BPS Wholesale
Chartwell RX, LLC
Cohance Lifesciences Limited
Cosette Pharmaceuticals, Inc.
Coupler LLC
DARMERICA, LLC
Dipharma Francis Srl
Encube Ethicals, Inc.
Everest Life Sciences. LLC
Fagron Inc
Golden State Medical Supply, Inc.
Haleos Labs Limited
LETCO MEDICAL, LLC
Lundbeck Pharmaceuticals Italy S.p.A.
Mayne Pharma
Mayne Pharma Commercial LLC
Medilux Laboratories Private Limited
Mylan Pharmaceuticals Inc.
NORTHSTAR RX LLC
NURAY CHEMICALS PRIVATE LIMITED
Pacific Pharma, Inc.
Professional Compounding Centers of America dba PCCA
Proficient Rx LP
Rising Pharma Holdings, Inc.
Sai Life Sciences Limited
Seton Pharmaceuticals
Spectrum Laboratory Products, Inc.
STHREE CHEMICALS PRIVATE LIMITED
Sun Pharmaceutical Industries, Inc.
Torrent Pharmaceuticals Limited
Trupharma, LLC
Viona Pharmaceuticals Inc
Westminster Pharmaceuticals, LLC
Zydus Lifesciences Limited
Why It Matters
Sectors
HealthPlastics & RubberMetals & MiningConstruction
Downstream Uses
Appears in 4 drug and cosmetic product listings (FDA).
- •Dapsone
- •Aczone
- •Dapsone 100 mg
- •Dapsone 25 mg
FDA Shortage Status
Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."
No Shortage
Shortage History
Each row is a separate manufacturer's FDA shortage filing — not a timeline for the drug as a whole. Multiple "current" entries are normal: each manufacturer/NDC files independently. Status reflects the manufacturer's report; reason describes their supply situation (Available, Unavailable, or to be discontinued).
to be discontinued
Dapsone Gel
03/27/2026Industrial Uses
Used in 2 sectors as 2 functional roles.
- •Intermediate in Plastics Material and Resin ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
- •Hardener in Machinery Manufacturing (100%)Processing—incorporation into article
- •Hardener in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
Vendor Pricing
$0.04/gAaron Chemicals LLC
CountryHong Kong
Pack$18.00 / 500 g
Purity98%
Vendors32 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
31 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| Angene Chemical | China → Hong Kong | $0.04 | 500 g | 98% |
| AA BLOCKS | United States | $0.05 | 1 kg | 98% |
| BLD Pharmatech GmbH | Germany | $0.05 | 1 kg | 98% |
| BLD Pharmatech Ltd. | China | $0.05 | 1 kg | 98% |
| Fluorochem EU | Germany | $0.06 | 1 kg | 97% |
| A2B Chem LLC | United States | $0.08 | 1 kg | 98% |
| BLD Pharmatech Co., Limited | United States | $0.11 | 1 kg | 98% |
| Ambeed, Inc. | United States | $0.11 | 1 kg | 98% |
| AK Scientific Specialized | United States | $0.11 | 1 kg | 98% |
| Fluorochem UK | United Kingdom | $0.11 | 100 g | 97% |
| Angene International Limited | United States | $0.15 | 500 g | 98% |
| AK Scientific, Inc. | United States | $0.15 | 1 kg | 99% |
| Fulfilled by Molport | Latvia | $0.20 | 25 g | 98% |
| Combi-Blocks, Inc. | United States | $0.25 | 1 kg | 98% |
| ALFA AESAR | Germany | $0.32 | 500 g | 98% |
| Sigma-Aldrich (Rush Stock) | Germany | $0.77 | 500 g | 97% |
| Sigma-Aldrich | Germany | $0.77 | 500 g | 97% |
| Cayman Europe | Estonia | $0.80 | 100 g | 98% |
| MedChemExpress MCE | Sweden | $2.19 | 100 g | 99.76% |
| MedKoo Biosciences, Inc | United States | $10.00 | 25 g | 98% |
| TargetMol Chemicals | China → United States | $17.00 | 2 g | 99.84% |
| Apexbio Technology LLC | United States | $19.60 | 5 g | 99.64% |
| AstaTech (2 weeks) | United States | $43.00 | 25 g | 95% |
| Molnova | China | $48.00 | 1 g | 99% |
| CliniSciences GmbH | Switzerland | $82.56 | 500 mg | 99% |
| Vitas M Chemical Limited | Hong Kong | $310.00 | 1 g | 90% |
| Princeton BioMolecular Research (SC) | United States | $2900.00 | 100 mg | 90% |
| ChemDiv, Inc. | United States | $4070.00 | 100 mg | 90% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 98% |
| ChemBridge Corporation | Kazakhstan | $18000.00 | 5 mg | 90% |
| TimTec, LLC (back-ordered) | United States | $32000.00 | 15 mg | 94% |
Chemical Identity
CAS80-08-0
PubChem CID2955
DTXSIDDTXSID4020371
FormulaC12H12N2O2S
Mol. Weight248.3 g/mol
SMILESC1=CC(=CC=C1N)S(=O)(=O)C2=CC=C(C=C2)N
Data Sources
DTXSID40203712026-04-06
https://doi.org/10.23645/epacomptox.5588566
Archive: data/sources/comptox/dsstox_identifiers.csv
29552026-04-06
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/2955/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON
Archive: data/sources/pubchem_properties/2955.json
80-08-02026-04-24
https://www.epa.gov/chemical-data-reporting
Archive: data/sources/epa_cdr/2020_cdr.csv
CAS 80-08-02026-06-13
https://api.fda.gov/drug/shortages.json
Archive: data/sources/fda/shortages/shortages.json