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Ampyrone

CAS 83-07-8

3H-Pyrazol-3-one, 4-amino-1,2-dihydro-1,5-dimethyl-2-phenyl-

Molecular structure of 83-07-8
US productionNot reported
Import value, 2024$1M
Top sourceSouth Korea 72%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

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 293311 · basket

These shares come from HS customs code 293311, which covers 5 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
KR 72%South KoreaGB 18%United KingdomCN 5%ChinaLT 3%LithuaniaDE 1%Germany

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Chemical Identity

CAS83-07-8
PubChem CIDNot recorded
DTXSIDDTXSID8048860
FormulaC11H13N3O
Mol. Weight203.245 g/mol
SMILESCN1N(C(=O)C(N)=C1C)C1=CC=CC=C1

Data Sources

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Brief citations

Ampyrone (CAS 83-07-8) https://chemicalindependence.com/chemical/83-07-8/ EPA TSCA Inventory: CAS 83-07-8. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 293311 for CAS 83-07-8. Reporting year: 2024. https://usatrade.census.gov/