fluorescein
Drug ingredientThis chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.
Where It Comes From
3 FDA-registered drug labelers
Abbey Color Incorporated
DELMAR CHEMICALS INC
Nexus Pharmaceuticals LLC
Why It Matters
Sectors
Health
Downstream Uses
Appears in 1 drug and cosmetic product listings (FDA).
- •Fluorescein
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
Chemical Identity
CAS2321-07-5
PubChem CID16850
DTXSIDDTXSID0038887
FormulaC20H12O5
Mol. Weight332.3 g/mol
SMILESC1=CC=C2C(=C1)C(=O)OC23C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O
Data Sources
168502026-04-07
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/name/fluorescein/cids/JSON
Archive: data/sources/pubchem_name/fluorescein.json
CAS 2321-07-52026-04-24
https://www.epa.gov/tsca-inventory
Archive: data/sources/tsca/tsca_inventory.csv
bulk match2026-04-07
https://open.fda.gov/data/ndc/
Archive: data/sources/fda/ndc/ndc.json