Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder
Buy Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder (CAS 3326-32-7) from Zemixal. Lab and bulk packs, batch COA, fast global delivery.
About Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder
Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder sits in our molecular Biology, Nucleotides & Purification Reagents section and ships worldwide from stock or short lead time. For your records (≥95%), the material is defined by CAS 3326-32-7, formula C21H11NO5S and molar mass 389.4 g/mol. Typical appearance is white to yellow to orange powder.
Use cases we see most often
- Electrophoresis
- DNA/RNA workflows
- Protein analysis
- Fluorescent labelling
Storage and safety notes
Keep it at 2–8 °C in a tightly closed container. It carries the GHS signal word Danger (H317 and H334), so wear gloves and eye protection and work with good ventilation.
Standard pack sizes are 50 mg, 100 mg, 250 mg and 1 g, and custom quantities are quoted on request. Each lot travels with a batch certificate of analysis and a 16-section SDS. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.
Typical uses
- Electrophoresis
- DNA/RNA workflows
- Protein analysis
- Fluorescent labelling
Applications
Grade guides
Specifications and identifiers
| Product name | Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder |
|---|---|
| Catalogue number | ZX-003333 |
| CAS number | 3326-32-7 |
| IUPAC name | 3',6'-dihydroxy-6-isothiocyanatospiro[2-benzofuran-3,9'-xanthene]-1-one |
| Molecular formula | C21H11NO5S |
| Molar mass | 389.4 g/mol |
| Exact mass | 389.0358 |
| Purity / assay | ≥95% |
| Physical form | Powder |
| Appearance | White to yellow to orange powder |
| XLogP3 | 4.8 |
| H-bond donors / acceptors | 2 / 7 |
| Topological polar surface area | 120 Ų |
| Storage | 2–8 °C |
| HS 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 |
| 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 |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
Signal word Danger
- 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 summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.
Pack sizes
| 50 mg | Quoted on request | |
| 100 mg | Quoted on request | |
| 250 mg | Quoted on request | |
| 1 g | Quoted on request |
Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.
Questions about Fluorescein isothiocyanate isomer I, ≥97.5% purity (HPLC), powder
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