5-Ethyl-2-methylpyridine

CAS 104-90-5

Pyridine, 5-ethyl-2-methyl-

Companies reported imports and no US production of this chemical to EPA for 2023.

US productionZero

Import value, 2024$1.3B

Import volume63.5K lb

Import dependency100%

Top sourceChina 32%

Production is reported production, not a complete census of factories. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

5-Ethyl-2-methylpyridine · US import value by year

Peak 2013: $2.2B · 2024: $1.3B · 2025: $1.3B

Where It Comes From

Customs basis: HS 293339 · basket

EPA reports by year

2023: US production Zero · Imports 63.5K lb

These shares come from HS customs code 293339, which covers 397 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 32%ChinaIN 15%IndiaDE 10%GermanyBE 9%BelgiumCH 8%Switzerland

Taiwan
Ukraine
Sweden
Argentina
Canada
Finland
Malta
Israel
Netherlands
Denmark
United Arab Emirates
Mexico
Brunei
Slovakia
Australia
South Africa
Poland
Latvia
Lithuania
Estonia
Slovenia
Czech Republic
Croatia
Hong Kong

EPA-registered importers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Arxada

Why It Matters

Sectors

Metals & Mining

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

Industrial Uses

•Corrosion inhibitor in Fabricated Metal Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.17/gSigma-Aldrich (Rush Stock)

CountryGermany

Pack$85.72 / 500 g

Purity96%

Vendors10 available

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

9 more vendors

Vendor	Country	$/g	Pack	Purity
Sigma-Aldrich	Germany	$0.17	500 g	96%
ALFA AESAR	Germany	$0.32	100 g	97%
Apollo Scientific US	United Kingdom	$0.36	100 g	95%
A2B Chem LLC (1 week)	United States	$1.28	100 g	95%
AstaTech, Inc	United States	$1.59	250 g	95%
AA BLOCKS (1 week)	United States	$2.28	100 g	97%
ChemDiv, Inc.	United States	$25.00	25 g	90%
Labotest KG	Germany	$217.80	5000 mg	90%
Key Organics Ltd.	United Kingdom	$1960.00	100 mg	90%

Chemical Identity

CAS104-90-5

PubChem CIDNot recorded

DTXSIDDTXSID7021861

FormulaC8H11N

Mol. Weight121.183 g/mol

SMILESCCC1=CN=C(C)C=C1

Data Sources

EPA TSCA InventoryRetrieved 2026-04-29
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

5-Ethyl-2-methylpyridine (CAS 104-90-5) https://chemicalindependence.com/chemical/104-90-5/ EPA TSCA Inventory: CAS 104-90-5. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 104-90-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 104-90-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293339 for CAS 104-90-5. Reporting year: 2024. https://usatrade.census.gov/