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methoxsalen

Drug ingredient

CAS 298-81-7

This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.

Molecular structure of 298-81-7
US productionNot reported
Import value, 2024$286M
Top sourceChina 48%

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 293220 · basket

These shares come from HS customs code 293220, which covers 151 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 48%ChinaIN 15%IndiaJP 7%JapanGB 7%United KingdomCH 7%Switzerland
5 FDA-registered drug labelers
CHONGQING HUAPONT SHENGCHEM PHARMACEUTICAL CO., LTD.
SOLARA ACTIVE PHARMA SCIENCES LIMITED
Strides Pharma Science Limited
Therakos LLC
Wanbury Limited

Why It Matters

Sectors
Health
Downstream Uses

Appears in 2 drug and cosmetic product listings (FDA).

  • •Uvadex
  • •Methoxsalen
FDA Shortage Status
No FDA shortage records

Vendor Pricing

$2.75/gA2B Chem LLC
CountryUnited States
Pack$275.00 / 100 g
Purity98%
Vendors39 available

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

38 more vendors
VendorCountry$/gPackPurity
AA BLOCKSUnited States$3.22100 g98%
Combi-Blocks, Inc.United States$3.55100 g95%
Angene ChemicalChina → Hong Kong$3.90100 g98%
ChemsceneUnited States$3.92100 g—
Aaron Chemicals LLCHong Kong$3.93100 g98%
BLD Pharmatech Co., LimitedUnited States$4.07100 g98%
BLD Pharmatech GmbHGermany$4.07100 g98%
BLD Pharmatech Ltd.China$4.07100 g98%
Ambeed, Inc.United States$4.07100 g98%
AK Scientific SpecializedUnited States$4.6825 g95%
Fluorochem UKUnited Kingdom$5.8610 g95%
AK Scientific, Inc.United States$6.5625 g98%
Fluorochem EUGermany$7.025 g95%
MedChemExpress MCESweden$12.2550 g99.98%
AstaTech (2 weeks)United States$18.1225 g95%
ALFA AESARGermany$42.0525 g99%
Apexbio Technology LLCUnited States$50.001 g99.88%
Sigma-Aldrich (Rush Stock)Germany$101.545 g—
Sigma-AldrichGermany$101.545 g—
Angene International LimitedUnited States$106.001 g99%
MedKoo Biosciences, IncUnited States$110.005 g98%
Chengdu Biopurify Phytochemicals Ltd.China$118.001 g98%
Labotest KGGermany$453.001000 mg90%
TargetMol ChemicalsChina → United States$580.0050 mg99.99%
CliniSciences GmbHSwitzerland$580.50100 mg99%
Axon MedchemNetherlands$1200.0050 mg99%
MolnovaChina$1440.0050 mg99%
ChemNormChina$1450.0020 mg98%
ChemFacesChina$1500.0020 mg98%
SpecsNetherlands$2534.951 g90%
Key Organics Ltd.United Kingdom$2740.0050 mg98%
Princeton BioMolecular Research (SC)United States$2900.00100 mg90%
Vitas M Chemical LimitedHong Kong$3170.00100 mg90%
ChemDiv, Inc.United States$4070.00100 mg90%
AngeneChina → Hong Kong$4266.6730 mg98%
ChemBridge CorporationKazakhstan$18000.005 mg90%
InterbioscreenHong Kong$18871.50100 mg95%
AnalytiCon Discovery - a Division of BRAIN Biotech AGGermany$73652.70100 mg85%

Chemical Identity

CAS298-81-7
PubChem CID4114
DTXSIDDTXSID8020830
FormulaC12H8O4
Mol. Weight216.19 g/mol
SMILESCOC1=C2C(=CC3=C1OC=C3)C=CC(=O)O2

Data Sources

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Brief citations

methoxsalen (CAS 298-81-7) https://chemicalindependence.com/chemical/298-81-7/ PubChem: 4114. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/4114 EPA TSCA Inventory: CAS 298-81-7. Retrieved 2026-04-24. https://www.epa.gov/tsca-inventory FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 293220 for CAS 298-81-7. Reporting year: 2024. https://usatrade.census.gov/