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6-Amino-1,3-dimethyluracil

CAS 6642-31-5

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

Molecular structure of 6642-31-5
US productionZero
Import value, 2024$7.6B
Import volume73.2K lb
Import dependency100%
Top sourceIreland 61%

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.

6-Amino-1,3-dimethyluracil · US import value by year
$4.4B2013$7.6B2024$4.0B2025

2013: $4.4B · Peak 2024: $7.6B · 2025: $4.0B

Where It Comes From

Customs basis: HS 293359 · basket

EPA reports by year
2023
US production Zero · Imports 73.2K lb
2019
US production Zero · Imports 233.3K lb

These shares come from HS customs code 293359, which covers 295 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IE 61%IrelandCH 30%SwitzerlandGB 2%United KingdomCN 2%ChinaIN 1%India
Domestic parents -- activity not disclosed (1)
Mitsubishi International Polymertrade
EPA-registered importers (1)
Akdeniz Chemson Additives

Why It Matters

Sectors
Core Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Vendor Pricing

$0.03/gAaron Chemicals LLC
CountryHong Kong
Pack$13.00 / 500 g
Purity96%
Vendors31 available

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

30 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.03500 g96%
A2B Chem LLCUnited States$0.04500 g97%
BLD Pharmatech GmbHGermany$0.041 kg97%
BLD Pharmatech Ltd.China$0.041 kg97%
AA BLOCKSUnited States$0.04500 g97%
AK Scientific SpecializedUnited States$0.10500 g95%
BLD Pharmatech Co., LimitedUnited States$0.111 kg97%
Ambeed, Inc.United States$0.111 kg97%
AK Scientific, Inc.United States$0.14500 g98%
Combi-Blocks, Inc.United States$0.251 kg96%
MedChemExpress MCESweden$0.25500 g99.89%
Angene International LimitedUnited States$0.28500 g98%
Fluorochem UKUnited Kingdom$0.2925 g98%
SynthonixUnited States$1.0425 g95%
Sigma-Aldrich (Rush Stock)Germany$1.50100 g98%
Sigma-AldrichGermany$1.50100 g98%
AstaTech (2 weeks)United States$3.0825 g97%
InterbioscreenHong Kong$12.0010 g95%
EximedUkraine$24.005 g95%
TargetMol ChemicalsChina → United States$35.001 g—
Otava, Ltd.Ukraine$45.005 g95%
ChemDiv, Inc.United States$67.2050 g90%
SpecsNetherlands$132.1310 g90%
Labotest KGGermany$217.805000 mg90%
Otava, Ltd. (2 weeks)Ukraine$2724.0050 mg95%
Princeton BioMolecular Research (SC)United States$2900.00100 mg90%
Vitas M Chemical LimitedHong Kong$3170.00100 mg90%
AngeneChina → Hong Kong$4266.6730 mg96%
Life Chemicals Inc.Ukraine → Canada$4500.0040 mg90%
TimTec, LLC (back-ordered)United States$32000.0015 mg94%

Chemical Identity

CAS6642-31-5
PubChem CID81152
DTXSIDDTXSID4074350
FormulaC6H9N3O2
Mol. Weight155.15 g/mol
SMILESCN1C(=CC(=O)N(C1=O)C)N

Data Sources

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Brief citations

6-Amino-1,3-dimethyluracil (CAS 6642-31-5) https://chemicalindependence.com/chemical/6642-31-5/ EPA CompTox (DSSTox): DTXSID4074350. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4074350 PubChem: 81152. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/81152 EPA Chemical Data Reporting: 6642-31-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 6642-31-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293359 for CAS 6642-31-5. Reporting year: 2024. https://usatrade.census.gov/