Fluorescein isothiocyanate isomer I, ≥97.5% p… 3326-32-7

Name: Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder
Brand: Vaqora Chemicals
SKU: VQ-003333

About Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder

Fluorescein isothiocyanate isomer I (CAS 3326-32-7) is a molecular biology reagent offered by Vaqora Chemicals at a purity of ≥95%. Its molecular formula is C21H11NO5S and its molecular weight is 389.4 g/mol. The IUPAC name is 3',6'-dihydroxy-6-isothiocyanatospiro[2-benzofuran-3,9'-xanthene]-1-one. Common synonyms include FITC and Fluorescein 5-isothiocyanate.

The material typically appears as a white to yellow to orange powder. Keep the material at 2–8 °C and protect it from moisture. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

It is commonly used for electrophoresis, DNA/RNA workflows, protein analysis and fluorescent labelling. Typical end-use sectors are academic and industrial research and diagnostics and biotechnology.

Vaqora Chemicals supplies Fluorescein isothiocyanate isomer I in 50 mg, 100 mg, 250 mg and 1 g packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Electrophoresis
DNA/RNA workflows
Protein analysis
Fluorescent labelling

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder
Catalogue No.	VQ-003333
CAS Number	3326-32-7
IUPAC name	3',6'-dihydroxy-6-isothiocyanatospiro[2-benzofuran-3,9'-xanthene]-1-one
Molecular formula	C₂₁H₁₁NO₅S
Molecular weight	389.4 g/mol
Exact mass	389.0358
Purity / assay	≥95%
HSN code	32049000
InChIKey	MHMNJMPURVTYEJ-UHFFFAOYSA-N
SMILES	C1=CC2=C(C=C1N=C=S)C(=O)OC23C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O
PubChem CID	18730

Physical properties
Physical form	Powder
Appearance	White to yellow to orange powder
LogP (XLogP3)	4.8
H-bond donors / acceptors	2 / 7
TPSA	120 Å²
Storage	2–8 °C
Synonyms	FITC, Fluorescein 5-isothiocyanate, 5-FITC, 5-isothiocyanatofluorescein, Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 3',6'-dihydroxy-5-isothiocyanato-, Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 3',6'-dihydroxy-5-isothiocyanato-, 5 Isothiocyanatofluorescein, Fluorescein 5 isothiocyanate, Fluorescein 5 isothiocyanate Hydrochloride, Hydrochloride, Fluorescein-5-isothiocyanate, 3',6'-dihydroxy-5-isothiocyanato-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one, fluorescein isothiocyanate isomer 1

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Signal word: Danger

Hazard statements

H317May cause an allergic skin reaction
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

Precautionary statements: P233, P260, P261, P271, P272, P280, P284, P302 + P352, P304 + P340, P321, P333 + P317, P342 + P316, P362 + P364, P403, 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 3326-32-7

Fluorescein isothiocyanate isomer I, 90% (HPLC)

CAS: 3326-32-7
Formula: C₂₁H₁₁NO₅S
MW: 389.4 g/mol

VQ-003332

Biochemistry

Fluorescein isothiocyanate,10%

CAS: 3326-32-7
Formula: C₂₁H₁₁NO₅S
MW: 389.4 g/mol

VQ-003334

Frequently asked questions

What is the CAS number of Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder?

The CAS Registry Number of Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder is 3326-32-7. It is also known as FITC, Fluorescein 5-isothiocyanate, 5-FITC.

What is the molecular formula and molecular weight of Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder?

Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder has the molecular formula C21H11NO5S and a molecular weight of 389.4 g/mol. Its IUPAC name is 3',6'-dihydroxy-6-isothiocyanatospiro[2-benzofuran-3,9'-xanthene]-1-one.

Which grade and pack sizes of Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder can I order?

We supply Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder in (≥95%) grade, in 50 mg, 100 mg, 250 mg, 1 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder?

Yes. Every lot of Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder 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 Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder be shipped internationally?

Yes. Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder is classified as hazardous, 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.

How should Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder be stored?

2–8 °C. Keep the container tightly closed and refer to the SDS for full handling guidance.