2,7-Dichlorofluoresceine

Name: 2,7-Dichlorofluoresceine
Brand: Vaqora Chemicals
SKU: VQ-002589

About 2,7-Dichlorofluoresceine

Listed under CAS 76-54-0, 2,7-Dichlorofluoresceine is an enzyme / protein reagent available from Vaqora Chemicals in AR grade. Its molecular formula is C20H10Cl2O5 and its molecular weight is 401.2 g/mol. Its systematic (IUPAC) name is 2',7'-dichloro-3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one. Common synonyms include 2',7'-Dichlorofluorescein and Fluorescein 27.

The material typically appears as an orange to red-brown powder. Key physical data: a melting point of 280 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Typical applications include enzymatic assays, enzyme inhibition studies, protein research and indicator for titrations. Buyers come mainly from academic and industrial research and diagnostics and biotechnology.

Available in 5 g, 10 g, 100 g and 1 kg packs, 2,7-Dichlorofluoresceine is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Enzymatic assays
Enzyme inhibition studies
Protein research
Indicator for titrations

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	2,7-Dichlorofluoresceine
Catalogue No.	VQ-002589
CAS Number	76-54-0
IUPAC name	2',7'-dichloro-3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one
Molecular formula	C₂₀H₁₀Cl₂O₅
Molecular weight	401.2 g/mol
Exact mass	399.9905
Grade	AR
HSN code	32049000
InChIKey	VFNKZQNIXUFLBC-UHFFFAOYSA-N
SMILES	C1=CC=C2C(=C1)C(=O)OC23C4=CC(=C(C=C4OC5=CC(=C(C=C35)Cl)O)O)Cl
PubChem CID	64944

Physical properties
Physical form	Powder
Appearance	Orange to red-brown powder
Melting point	280 °C
LogP (XLogP3)	4.7
H-bond donors / acceptors	2 / 5
TPSA	76 Å²
UN number	UN 1219
Synonyms	2',7'-Dichlorofluorescein, 2',7'-dichloro-3',6'-dihydroxy-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one, Fluorescein 27, Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 2',7'-dichloro-3',6'-dihydroxy-, Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 2',7'-dichloro-3',6'-dihydroxy-, 2',7'-dichlorofluorescin, 2,7-Dichlorofluorescein, 2',7'-Dichloro-3',6'-dihydroxy-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one, Spiro[isobenzofuran-1(3H),9'-[9h]xanthen]-3-one,2',7'-dichloro-3',6'-dihydroxy-, 2',7'-Dichlorofluorescein [Fluorescent indicator], 2',7'-bis(chloranyl)-3',6'-bis(oxidanyl)spiro[2-benzofuran-3,9'-xanthene]-1-one, 11,16-dichloro-12,15-dihydroxyspiro[3-hydroisobenzofuran-3,9'-xanthene]-1-one

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 76-54-0

ACS

2,7-Dichlorofluoresceine, ACS reagent

CAS: 76-54-0
Formula: C₂₀H₁₀Cl₂O₅
MW: 401.2 g/mol

VQ-002590

Frequently asked questions

What is the CAS number of 2,7-Dichlorofluoresceine?

The CAS Registry Number of 2,7-Dichlorofluoresceine is 76-54-0. It is also known as 2',7'-Dichlorofluorescein, 2',7'-dichloro-3',6'-dihydroxy-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one, Fluorescein 27.

What is the molecular formula and molecular weight of 2,7-Dichlorofluoresceine?

2,7-Dichlorofluoresceine has the molecular formula C20H10Cl2O5 and a molecular weight of 401.2 g/mol. Its IUPAC name is 2',7'-dichloro-3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one.

Which grade and pack sizes of 2,7-Dichlorofluoresceine can I order?

We supply 2,7-Dichlorofluoresceine in AR grade, in 5 g, 10 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 2,7-Dichlorofluoresceine?

Yes. Every lot of 2,7-Dichlorofluoresceine is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 2,7-Dichlorofluoresceine be shipped internationally?

Yes. 2,7-Dichlorofluoresceine is classified as hazardous (UN 1219), so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.