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4-Methyl-2-(2-methylprop-1-en-1-yl)tetrahydro-2H-pyran

CAS 16409-43-1

EPA’s 2023 records show zero U.S. production of this chemical.

Molecular structure of 16409-43-1
US productionZero
Import value, 2024$3.5B
Import volumeCBI
Top sourceIreland 57%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

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.

Where It Comes From

Customs basis: HS 293299 · basket

EPA reports by year
2023
US production Zero · Imports Confidential
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 293299, which covers 229 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IE 57%IrelandNL 24%NetherlandsCH 8%SwitzerlandCN 5%ChinaIT 2%Italy
Domestic parents -- activity not disclosed (1)
Reckitt Benckiser
EPA-registered importers (4)
Basf Se · DE Germany
Basf
Givaudan Fragrances
Henkel Us Operations

Why It Matters

Sectors
Consumer ProductsCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 1 functional role.

  • •Fragrance in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Fragrance in Soap, Cleaning Compound, and Toilet Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.26/gAaron Chemicals LLC
CountryHong Kong
Pack$130.00 / 500 g
Purity99%
Vendors21 available

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

20 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.28500 g99%
Combi-Blocks, Inc.United States$0.43500 g95%
AstaTech, IncUnited States$0.49500 g95%
BLD Pharmatech Ltd.China$0.51500 g97%
A2B Chem LLCUnited States$0.55500 g97%
AA BLOCKSUnited States$0.58500 g97%
MedChemExpress MCESweden$0.60500 g—
BLD Pharmatech Co., LimitedUnited States$0.80100 g97%
Ambeed, Inc.United States$0.80100 g97%
AK Scientific SpecializedUnited States$0.81100 g95%
Fluorochem UKUnited Kingdom$0.8625 g95%
BLD Pharmatech GmbHGermany$0.9625 g97%
AK Scientific, Inc.United States$1.12100 g97%
Angene International LimitedUnited States$2.00100 g97%
Apollo Scientific UKUnited Kingdom$7.3625 g95%
TargetMol ChemicalsChina → United States$50.001 g99.85%
Princeton BioMolecular Research (SC)United States$2900.00100 mg90%
Vitas M Chemical LimitedHong Kong$3170.00100 mg90%
AngeneChina → Hong Kong$4266.6730 mg99%
InterbioscreenHong Kong$6187.00100 mg92%

Chemical Identity

CAS16409-43-1
PubChem CID27866
DTXSIDDTXSID1051771
FormulaC10H18O
Mol. Weight154.25 g/mol
SMILESCC1CCOC(C1)C=C(C)C

Data Sources

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Brief citations

4-Methyl-2-(2-methylprop-1-en-1-yl)tetrahydro-2H-pyran (CAS 16409-43-1) https://chemicalindependence.com/chemical/16409-43-1/ EPA CompTox (DSSTox): DTXSID1051771. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1051771 PubChem: 27866. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/27866 EPA Chemical Data Reporting: 16409-43-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 16409-43-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293299 for CAS 16409-43-1. Reporting year: 2024. https://usatrade.census.gov/