Iohexol

Drug ingredient

CAS 66108-95-0

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

Molecular structure of 66108-95-0
US productionNot reported
Import value, 2024$872M
Top sourceSwitzerland 44%

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 292429 · basket

These shares come from HS customs code 292429, which covers 203 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CH 44%SwitzerlandCN 19%ChinaIN 12%IndiaJP 9%JapanIE 6%Ireland
7 FDA-registered drug labelers
Amneal Pharmaceuticals Private Limited
Divi's Laboratories Limited
GE Healthcare
GE Healthcare Inc.
GE Healthcare Lindesnes
Zhejiang Haizhou Pharmaceutical Co., Ltd.
Zhejiang Starry Pharmaceutical Co., Ltd.

Why It Matters

Sectors
Health
Downstream Uses

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

  • •Iohexol
  • •Omnipaque
FDA Shortage Status
No FDA shortage records

Vendor Pricing

$1.27/gAaron Chemicals LLC
CountryHong Kong
Pack$127.00 / 100 g
Purity98%
Vendors24 available

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

Chemical Identity

CAS66108-95-0
PubChem CID3730
DTXSIDDTXSID6023157
FormulaC19H26I3N3O9
Mol. Weight821.1 g/mol
SMILESCC(=O)N(CC(CO)O)C1=C(C(=C(C(=C1I)C(=O)NCC(CO)O)I)C(=O)NCC(CO)O)I

Data Sources

Brief citations

Iohexol (CAS 66108-95-0) https://chemicalindependence.com/chemical/66108-95-0/ PubChem: 3730. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/3730 FDA National Drug Code directory: CAS 66108-95-0. Retrieved 2026-04-25. https://open.fda.gov/data/ndc/ FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 292429 for CAS 66108-95-0. Reporting year: 2024. https://usatrade.census.gov/