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Tobramycin

Drug ingredient

CAS 32986-56-4

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

Molecular structure of 32986-56-4
US productionNot reported
Import value, 2024$546M
Top sourceItaly 41%

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 294190 · basket

These shares come from HS customs code 294190, which covers 90 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IT 41%ItalyCN 24%ChinaDK 9%DenmarkHR 6%CroatiaIN 6%India
50 FDA-registered drug labelers
A-S Medication Solutions
Advanced Rx of Tennessee, LLC
Advanced Rx Pharmacy of Tennessee, LLC
Alembic Pharmaceuticals Inc.
Alembic Pharmaceuticals Limited
American Health Packaging
Amneal Pharmaceuticals LLC
Ascend Laboratories, LLC
Asclemed USA, Inc.
Aurobindo Pharma Limited
Bausch & Lomb Americas Inc.
Bausch & Lomb Incorporated
Belcher Pharmaceuticals, LLC
Bryant Ranch Prepack
Chiesi USA, Inc.
Chongqing Daxin Pharmaceutical Co. Ltd.
DirectRX
Dr. Reddy's Laboratories Inc.
Eyevance Pharmaceuticals, LLC
Genericus, Inc.
Gland Pharma Limited
Harrow Eye, LLC
HOVIONE FARMACIENCIA SA
JVET PHARMACEUTICALS LLC
Lifestar Pharma LLC
Livzon Group Fuzhou Fuxing Pharmaceutical Co., Ltd.
Lupin Pharmaceuticals, Inc.
Micro Labs Limited
NorthStar RxLLC
Novartis Pharmaceuticals Corporation
NuCare Pharmaceuticals,Inc.
Padagis US LLC
Pari Respiratory Equipment, Inc.
Prasco, LLC
Preferred Pharmaceuticals Inc.
Professional Compounding Centers of America
Proficient Rx LP
Redpharm Drug
REMEDYREPACK INC.
Ritedose Pharmaceuticals, LLC
Sandoz Inc
Slate Run Pharmaceuticals, LLC
Somerset Therapeutics, LLC
Sportpharm LLC
St. Mary's Medical Park Pharmacy
Sun Pharmaceutical Industries, Inc.
TAPI Hungary Industries Kft.
Teva Pharmaceutical Works Private Limited Company
Teva Pharmaceuticals USA, Inc.
Viatris Specialty LLC

Why It Matters

Sectors
Health
Downstream Uses

Appears in 15 drug and cosmetic product listings (FDA).

  • •Tobramycin AND Dexamethasone
  • •Bethkis
  • •Tobramycin
  • •Loteprednol etabonate and Tobramycin
  • •Tobradex ST
  • •Zylet
  • •Tobramycin Inhalation
  • •Kitabis Pak
Show all 15
  • •TOBI
  • •TOBI Podhaler
  • •Tobramycin Ophthalmic Solution
  • •TobraDex
  • •Tobramycin Inhalation Solution Pak
  • •Tobrex
  • •Tobramycin Inhalation Solution
FDA Shortage Status
No Shortage
Shortage History
  • to be discontinued

    Tobramycin Solution

    Shortage listed since June 16, 2025

See all current drug shortages

Chemical Identity

CAS32986-56-4
PubChem CID36294
DTXSIDDTXSID8023680
FormulaC18H37N5O9
Mol. Weight467.5 g/mol
SMILESC1C(C(C(C(C1N)OC2C(C(C(C(O2)CO)O)N)O)O)OC3C(CC(C(O3)CN)O)N)N

Data Sources

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Brief citations

Tobramycin (CAS 32986-56-4) https://chemicalindependence.com/chemical/32986-56-4/ PubChem: 36294. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/36294 FDA National Drug Code directory: CAS 32986-56-4. Retrieved 2026-04-25. https://open.fda.gov/data/ndc/ FDA Drug Shortages: CAS 32986-56-4. Retrieved 2026-10-04. https://www.accessdata.fda.gov/scripts/drugshortages/ US Census international trade: HS 294190 for CAS 32986-56-4. Reporting year: 2024. https://usatrade.census.gov/