Selenium dioxide

Drug ingredient

CAS 7446-08-4

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

US productionNot reported

Import value, 2024$75M

Top sourceChina 30%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

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 281129 · basket

These shares come from HS customs code 281129, which covers 18 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

CN 30%ChinaAT 23%AustriaPL 9%PolandCA 8%CanadaCZ 8%Czech Republic

Italy
Romania
Malaysia
India
Netherlands
Ukraine
Denmark
Singapore
Switzerland
Morocco
United Kingdom

4 FDA-registered drug labelers

BioActive Nutritional, Inc.

Deseret Biologicals, Inc.

Energique, Inc.

InLight Creation, LLC.

Why It Matters

Sectors

Health

Downstream Uses

Appears in 6 drug and cosmetic product listings (FDA).

•Metalogin
•Electrolyte Plus
•Occuloplex I
•Bio Electrolyte
•Recovatone
•E.O.L.

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 FDA shortage records

Vendor Pricing

$0.25/gA2B Chem LLC

CountryUnited States

Pack$124.00 / 500 g

Purity99.9%

Vendors8 available

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

7 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS	United States	$0.32	500 g	99.9%
AK Scientific Specialized	United States	$0.37	500 g	95%
AK Scientific, Inc.	United States	$0.52	500 g	98%
Sigma-Aldrich (Rush Stock)	Germany	$0.82	500 g	99.8%
Sigma-Aldrich	Germany	$0.82	500 g	99.8%
Fluorochem UK	United Kingdom	$1.30	100 g	—
Otava, Ltd. (2 weeks)	Ukraine	$2724.00	50 mg	90%

Chemical Identity

CAS7446-08-4

PubChem CID24007

DTXSIDDTXSID4021264

FormulaO2Se

Mol. Weight110.97 g/mol

SMILESO=[Se]=O

Data Sources

PubChem · compound 24007Retrieved 2026-04-07
EPA TSCA InventoryRetrieved 2026-04-24
FDA National Drug Code directoryRetrieved 2026-04-07
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Selenium dioxide (CAS 7446-08-4) https://chemicalindependence.com/chemical/7446-08-4/ PubChem: 24007. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/24007 EPA TSCA Inventory: CAS 7446-08-4. Retrieved 2026-04-24. https://www.epa.gov/tsca-inventory FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 281129 for CAS 7446-08-4. Reporting year: 2024. https://usatrade.census.gov/