rose bengal lactone
Drug ingredientCAS 4159-77-7
This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.
US productionNot reported
Top sourceNo public record
EPA lists this chemical as inactive, meaning no company reported making, importing or processing it in the US from 2006 to 2016.
Why supply is unknownWhere It Comes From
EPA and Census publish no US supply data for this chemical.
1 FDA-registered drug labeler
Cambrex Charles City, Inc
Why It Matters
Sectors
Health
Downstream UsesNot recorded
FDA Shortage Status
Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."
No FDA shortage records
Vendor Pricing
$152.57/gSigma-Aldrich (Rush Stock)
CountryGermany
Pack$152.57 / 1 g
Purity95%
Vendors9 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
8 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| Sigma-Aldrich | Germany | $152.57 | 1 g | 95% |
| Aaron Chemicals LLC | Hong Kong | $324.00 | 250 mg | 95% |
| Angene Chemical | China → Hong Kong | $352.00 | 250 mg | 95% |
| AstaTech (2 weeks) | United States | $416.00 | 250 mg | 95% |
| A2B Chem LLC (1 week) | United States | $639.00 | 1 g | 98% |
| AA BLOCKS (1 week) | United States | $675.00 | 1 g | 98% |
| MedChemExpress MCE | Sweden | $1004.30 | 100 mg | 99.3% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 95% |
Chemical Identity
CAS4159-77-7
PubChem CID69439
DTXSIDDTXSID0048426
FormulaC20H4Cl4I4O5
Mol. Weight973.7 g/mol
SMILESC1=C2C(=C(C(=C1I)O)I)OC3=C(C(=C(C=C3C24C5=C(C(=C(C(=C5Cl)Cl)Cl)Cl)C(=O)O4)I)O)I
Data Sources
- PubChem · compound 69439Retrieved 2026-04-07
- EPA TSCA InventoryRetrieved 2026-04-24
- FDA National Drug Code directoryRetrieved 2026-04-07
Brief citations
rose bengal lactone (CAS 4159-77-7) https://chemicalindependence.com/chemical/4159-77-7/ PubChem: 69439. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/69439 EPA TSCA Inventory: CAS 4159-77-7. 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/