sulfadimethoxine sodium

Drug ingredient

CAS 1037-50-9

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

Molecular structure of 1037-50-9 — 1 Na⁺

US productionNot reported

Import value, 2024$2.0B

Top sourceIreland 63%

EPA lists this chemical as inactive, meaning no company reported making, importing or processing it in the US from 2006 to 2016.

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 293590 · basket

These shares come from HS customs code 293590, which covers 182 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).

IE 63%IrelandSG 14%SingaporeIN 7%IndiaCN 7%ChinaCH 2%Switzerland

Portugal
Spain
Italy
Austria
Israel
Hungary
Canada
South Korea
Netherlands
Finland
Poland
Indonesia
Ukraine
Mexico
South Africa
Croatia
Greece
Taiwan
Hong Kong

2 FDA-registered drug labelers

JIANGSU TIANHE PHARMACEUTICAL CO., LTD.

Valens Molecules Private Limited

Why It Matters

Sectors

Health

Downstream UsesNot recorded

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

$1.45/gA2B Chem LLC

CountryUnited States

Pack$145.00 / 100 g

Purity98%

Vendors9 available

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

8 more vendors

Vendor	Country	$/g	Pack	Purity
Aaron Chemicals LLC	Hong Kong	$1.54	100 g	98%
Angene Chemical	China → Hong Kong	$1.56	100 g	98%
AA BLOCKS	United States	$1.88	100 g	98%
AstaTech, Inc	United States	$16.76	25 g	95%
TargetMol Chemicals	China → United States	$65.00	1 g	99.96%
Angene International Limited	United States	$143.00	1 g	95%
TargetMol Chemicals EU	Austria	$350.00	100 mg	99.96%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS1037-50-9

PubChem CID13384041

DTXSIDDTXSID50858735

FormulaC12H13N4NaO4S

Mol. Weight332.31 g/mol

SMILESCOC1=NC(=NC(=C1)[N-]S(=O)(=O)C2=CC=C(C=C2)N)OC.[Na+]

Data Sources

PubChem · compound 13384041Retrieved 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

sulfadimethoxine sodium (CAS 1037-50-9) https://chemicalindependence.com/chemical/1037-50-9/ PubChem: 13384041. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/13384041 EPA TSCA Inventory: CAS 1037-50-9. 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 293590 for CAS 1037-50-9. Reporting year: 2024. https://usatrade.census.gov/