1-(4-tert-Butylphenyl)-3-(4-methoxyphenyl)propane-1,3-dione

Drug ingredient

CAS 70356-09-1

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

Molecular structure of 70356-09-1
US productionZero
Import value, 2024$85M
Import volume8.3M lb
Import dependency100%
Top sourceChina 53%

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.

1-(4-tert-Butylphenyl)-3-(4-methoxyphenyl)propane-1,3-dione · US import value by year
$86M2013$100M2018$85M2024$73M2025

2013: $86M · Peak 2018: $100M · 2024: $85M · 2025: $73M

Where It Comes From

Customs basis: HS 291450 · basket

EPA reports by year
2023
US production Zero · Imports 8.3M lb
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 291450, which covers 68 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 53%ChinaIN 25%IndiaMX 9%MexicoDE 7%GermanyIT 4%Italy
Domestic parents -- activity not disclosed (2)
Reckitt Benckiser
Symrise
EPA-registered importers (2)
Reckitt Benckiser Group · GB United Kingdom
Givaudan Fragrances

Why It Matters

Sectors
Core ChemicalsHealth
Downstream Uses

Appears in 2109 drug and cosmetic product listings (FDA).

  • •Beeswax Lip Balm
  • •Cherry Lip Balm
  • •Vanilla Lip Balm
  • •Wildberry Lip Balm
  • •Tiege Hanley AM Morning Facial Moisturizer with SPF 20
  • •Sport Sunscreen SPF 50
  • •Hydraboost Lip Treatment
  • •m61 Perfect Body Broad Spectrum SPF 30 Sunscreen
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 2 functional roles.

  • •Fragrance in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Photosensitive agent in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.12/gAaron Chemicals LLC
CountryHong Kong
Pack$62.00 / 500 g
Purity98%
Vendors27 available

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

Chemical Identity

CAS70356-09-1
PubChem CID51040
DTXSIDDTXSID9044829
FormulaC20H22O3
Mol. Weight310.4 g/mol
SMILESCC(C)(C)C1=CC=C(C=C1)C(=O)CC(=O)C2=CC=C(C=C2)OC

Data Sources

Brief citations

1-(4-tert-Butylphenyl)-3-(4-methoxyphenyl)propane-1,3-dione (CAS 70356-09-1) https://chemicalindependence.com/chemical/70356-09-1/ EPA CompTox (DSSTox): DTXSID9044829. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9044829 PubChem: 51040. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/51040 EPA Chemical Data Reporting: 70356-09-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 70356-09-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291450 for CAS 70356-09-1. Reporting year: 2024. https://usatrade.census.gov/