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Hydroxychloroquine sulfate

Drug ingredient

CAS 747-36-4

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

Molecular structure of 747-36-4
US productionNot reported
Import value, 2024$111M
Top sourceIndia 28%

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 293349 · basket

These shares come from HS customs code 293349, which covers 94 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IN 28%IndiaCN 27%ChinaSE 12%SwedenKR 10%South KoreaGB 4%United Kingdom
42 FDA-registered drug labelers
A-S Medication Solutions
Accord Healthcare, Inc.,
Advanz Pharma (US) Corp.
American Health Packaging
Amneal Pharmaceuticals NY LLC
ANI Pharmaceuticals, Inc.
Aphena Pharma Solutions - Tennessee, LLC
Asclemed USA, Inc.
Aurobindo Pharma Limited
AvPAK
Bryant Ranch Prepack
Cardinal Health 107, LLC
Chartwell RX, LLC
CHINOIN Pharmaceutical and Chemical Works Private Co. Ltd.
Chongqing Kangle Pharmaceutical Co., Ltd.
Coupler LLC
Creekwood Pharmaceuticals LLC
Dasami Lab Private Limited
Dr. Reddy's Laboratories Inc.
Dr. Reddys Laboratories Limited
EUROAPI Hungary Ltd.
Fermion Oy
HETERO LABS LIMITED
Ipca Laboratories Limited
Laurus Labs Limited
Major Pharmaceuticals
MSN Life Sciences Private Limited
NCS HealthCare of KY, LLC dba Vangard Labs
Northstar Rx LLC.
NuCare Pharmaceuticals, Inc.
Preferred Pharmaceuticals, Inc.
Professional Compounding Centers of America
Proficient Rx LP
Quallent Pharmaceuticals Health LLC
Rising Pharma Holdings, Inc.
SCI Pharmtech, Inc.
SMS Pharmaceuticals Limited
Sun Pharmaceutical Industries, Inc.
Symed Labs Limited
Teva Pharmaceuticals USA, Inc.
Zydus Lifesciences Limited
Zydus Pharmaceuticals USA Inc.

Why It Matters

Sectors
Health
Downstream Uses

Appears in 4 drug and cosmetic product listings (FDA).

  • •Hydroxychloroquine Sulfate
  • •Plaquenil
  • •Sovuna
  • •Hydroxychloroquine
FDA Shortage Status
No Shortage
Shortage History
  • to be discontinued

    Hydroxychloroquine Sulfate Tablet

    Shortage listed since January 5, 2026

See all current drug shortages

Vendor Pricing

$1.18/gAaron Chemicals LLC
CountryHong Kong
Pack$590.00 / 500 g
Purity99%
Vendors28 available

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

27 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$1.19500 g99%
A2B Chem LLCUnited States$1.24500 g99%
Combi-Blocks, Inc.United States$1.34500 g98%
BLD Pharmatech GmbHGermany$1.48500 g99%
BLD Pharmatech Ltd.China$1.48500 g99%
AA BLOCKSUnited States$1.51500 g99%
AstaTech, IncUnited States$2.3625 g98%
AK Scientific SpecializedUnited States$2.56500 g95%
AK Scientific, Inc.United States$3.51500 g98%
Ambeed, Inc.United States$3.82100 g99%
BLD Pharmatech Co., LimitedUnited States$4.1010 g99%
Fluorochem UKUnited Kingdom$4.295 g95%
Angene International LimitedUnited States$6.4825 g98%
MedKoo Biosciences, IncUnited States$19.0050 g98%
MedChemExpress MCESweden$83.4910 g99.99%
TargetMol ChemicalsChina → United States$346.00500 mg99.88%
Sigma-Aldrich (Rush Stock)Germany$461.891 g—
Sigma-AldrichGermany$461.891 g—
Axon MedchemNetherlands$576.00250 mg99%
MolnovaChina$670.00100 mg99%
TargetMol Chemicals EUAustria$740.00100 mg99.88%
Apexbio Technology LLCUnited States$1000.0050 mg99.84%
Cayman EuropeEstonia$1161.44250 mg95%
Vitas M Chemical LimitedHong Kong$4020.0050 mg90%
Princeton BioMolecular Research (SC)United States$4200.0050 mg90%
AngeneChina → Hong Kong$4266.6730 mg99%
TimTec, LLCUnited States$9333.3330 mg98%

Chemical Identity

CAS747-36-4
PubChem CID12947
DTXSIDDTXSID1047811
FormulaC18H28ClN3O5S
Mol. Weight434 g/mol
SMILESCCN(CCCC(C)NC1=C2C=CC(=CC2=NC=C1)Cl)CCO.OS(=O)(=O)O

Data Sources

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Brief citations

Hydroxychloroquine sulfate (CAS 747-36-4) https://chemicalindependence.com/chemical/747-36-4/ PubChem: 12947. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/12947 FDA National Drug Code directory: CAS 747-36-4. Retrieved 2026-04-25. https://open.fda.gov/data/ndc/ FDA Drug Shortages: CAS 747-36-4. Retrieved 2026-10-04. https://www.accessdata.fda.gov/scripts/drugshortages/ US Census international trade: HS 293349 for CAS 747-36-4. Reporting year: 2024. https://usatrade.census.gov/