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Metribuzin

CAS 21087-64-9

Molecular structure of 21087-64-9
US productionNot reported
Import value, 2024$309M
Top sourceChina 40%

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

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 293369 · basket

These shares come from HS customs code 293369, which covers 192 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 40%ChinaJP 19%JapanIN 15%IndiaES 11%SpainDE 5%Germany

Why It Matters

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

Chemical Identity

CAS21087-64-9
PubChem CIDNot recorded
DTXSIDDTXSID6024204
FormulaC8H14N4OS
Mol. Weight214.29 g/mol
SMILESCSC1=NN=C(C(=O)N1N)C(C)(C)C

Data Sources

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Brief citations

Metribuzin (CAS 21087-64-9) https://chemicalindependence.com/chemical/21087-64-9/ EPA CompTox (DSSTox): 21087-64-9. Retrieved 2026-04-29. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6024204 US Census international trade: HS 293369 for CAS 21087-64-9. Reporting year: 2024. https://usatrade.census.gov/