Selenomethionine

Drug ingredient

CAS 1464-42-2

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

US productionNot reported

Import value, 2024$537M

Top sourceChina 39%

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 293190 · basket

These shares come from HS customs code 293190, which covers 378 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 39%ChinaDE 17%GermanyIT 9%ItalyIN 7%IndiaJP 7%Japan

Ireland
Netherlands
Switzerland
Monaco
Ukraine
Spain
Mexico
Poland
Indonesia
Armenia
Israel
Sweden
Australia
Czech Republic
Hungary
Brunei
Hong Kong
Brazil
Thailand
Argentina
Finland
Austria
Latvia

1 FDA-registered drug labeler

Guna spa

Why It Matters

Sectors

Health

Downstream Uses

Appears in 1 drug and cosmetic product listings (FDA).

•GUNA-CELL

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

$4.00/gAaron Chemicals LLC

CountryHong Kong

Pack$400.00 / 100 g

Purity98%

Vendors24 available

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

23 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$4.04	100 g	98%
Ambeed, Inc.	United States	$9.50	100 g	98%
Chemscene	United States	$9.50	100 g	—
A2B Chem LLC	United States	$16.08	25 g	98%
Fluorochem UK	United Kingdom	$17.16	1 g	95%
AA BLOCKS	United States	$17.92	25 g	98%
AstaTech, Inc	United States	$23.92	25 g	95%
AK Scientific Specialized	United States	$84.80	5 g	95%
AK Scientific, Inc.	United States	$100.40	5 g	98%
Acrotein ChemBio, Inc.	United States	$121.00	5 g	—
A2B Chem LLC (2 weeks)	United States	$170.00	2.5 g	98%
AA BLOCKS (2 weeks)	United States	$175.60	2.5 g	98%
MedChemExpress MCE	Sweden	$186.34	500 mg	99.86%
TargetMol Chemicals	China → United States	$250.00	500 mg	99.67%
Molnova	China	$385.00	200 mg	99%
Labotest KG	Germany	$453.00	1000 mg	90%
Sigma-Aldrich (Rush Stock)	Germany	$641.15	1 g	99%
Sigma-Aldrich	Germany	$641.15	1 g	99%
Cayman Europe	Estonia	$836.57	1 g	98%
Angene International Limited	United States	$1224.00	250 mg	95%
Otava, Ltd. (2 weeks)	Ukraine	$2724.00	50 mg	90%
MedKoo Biosciences, Inc	United States	$3400.00	250 mg	98%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS1464-42-2

PubChem CID15103

DTXSIDDTXSID7040609

FormulaC5H11NO2Se

Mol. Weight196.12 g/mol

SMILESC[Se]CCC(C(=O)O)N

Data Sources

PubChem · compound 15103Retrieved 2026-04-07
FDA National Drug Code directoryRetrieved 2026-04-25
FDA National Drug Code directoryRetrieved 2026-04-07
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Selenomethionine (CAS 1464-42-2) https://chemicalindependence.com/chemical/1464-42-2/ PubChem: 15103. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/15103 FDA National Drug Code directory: CAS 1464-42-2. 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 293190 for CAS 1464-42-2. Reporting year: 2024. https://usatrade.census.gov/