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Levamisole hydrochloride

Drug ingredient

CAS 16595-80-5

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

Molecular structure of 16595-80-5
1 HCl
US productionNot reported
Import value, 2024$6.4B
Top sourceSingapore 36%

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 293499 · basket

These shares come from HS customs code 293499, which covers 575 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
SG 36%SingaporeIE 23%IrelandCN 11%ChinaCH 6%SwitzerlandIN 5%India
7 FDA-registered drug labelers
Alivira Animal Health Limited
AX Pharmaceutical Corp
Darmerica, LLC
Jiangsu Tianhe Pharmaceutical Co., Ltd.
Kalchem International inc
Nanjing White Whale Pharmaceutical Co., Ltd
Willow Birch Pharma, Inc.

Why It Matters

Sectors
Health
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Chemical Identity

CAS16595-80-5
PubChem CID27944
DTXSIDDTXSID7047518
FormulaC11H13ClN2S
Mol. Weight240.75 g/mol
SMILESC1CSC2=NC(CN21)C3=CC=CC=C3.Cl

Data Sources

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Brief citations

Levamisole hydrochloride (CAS 16595-80-5) https://chemicalindependence.com/chemical/16595-80-5/ PubChem: 27944. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/27944 FDA National Drug Code directory: CAS 16595-80-5. 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 293499 for CAS 16595-80-5. Reporting year: 2024. https://usatrade.census.gov/