2',7'-Dichlorofluorescein (CAS 76-54-0) Sigma-Aldrich

2',7'-Dichlorofluorescein molecular structure — Molecular structure

The Sigma-Aldrich catalog lists 6 grades and pack sizes of 2',7'-Dichlorofluorescein (CAS 76-54-0). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS	76-54-0
Molecular formula	C20H10Cl2O5
Molecular weight	401.19 g/mol
IUPAC name	2',7'-dichloro-3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one
Synonyms	Fluorescein 27 · 56NQM5UZT1 · FLUORESCEIN 548 · D AND C ORANGE 25 · 2',7'-dichlorofluorescin · RefChem:80172

Safety & Hazards (GHS) Warning

Irritant

H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand	Product / grade	Code
Sigma	2',7'-DICHLOROFLUORESCEIN APPROX.	D6665-25G D6665-5G	Request Quote
Sigma	2',7'-DICHLOROFLUORESCEIN S	35848-25G 35848-5G	Request Quote
Sigma	2',7'-DICHLOROFLUORESCEIN, A.C.S. REAGE	410217-10G 410217-1G	Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.