Fluoresceinamine, isomer I
Fluoresceinamine, isomer I (CAS 3326-34-9) is a derivative of fluorescein with the empirical formula C20H13NO5 and a molecular weight of 347.32 g/mol. This fluorescent compound is primarily utilised as a stain and dye in various biological and histological applications. Its spectral properties allow for visual tracking and analysis in cell biology research. Tech Serve Solutions provides this chemical for laboratory and research purposes.
- IUPAC
- 5-Aminofluorescein
- Synonyms
- 5-AminofluoresceinC.I. 45350C.I. Fluorescent YellowFluorescein, 5-amino-

Cell Biology Staining
Fluoresceinamine, isomer I serves as a fluorescent stain in cell biology. It allows researchers to visualise cellular structures and processes under a microscope due to its distinct spectral properties.
Histology and Hematology
This compound is employed as a dye in histological and hematological preparations. It aids in the differentiation and identification of various tissues and blood components during microscopic examination.
Fluorescent Labelling
As a derivative of fluorescein, it can be used for fluorescent labelling in various biochemical and biological assays. Its excitation and emission spectra are crucial for such detection methods.
| Molecular weight | 347.32 |
|---|---|
| Empirical formula | C20H13NO5 |
| Melting point | 223 °C (dec.)(lit.) |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/37/38 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Absorption | λmax 496 nm |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Fluoresceinamine, isomer I used for?
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Fluoresceinamine, isomer I is used as a fluorescent stain and dye in cell biology, histology, and hematology. It is also utilised for fluorescent labelling in various research applications.
What are the CAS number and formula for Fluoresceinamine, isomer I?
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The CAS number for Fluoresceinamine, isomer I is 3326-34-9, and its empirical formula is C20H13NO5.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this chemical for research and laboratory purposes. The specific grade and purity are available upon request or via our product specification sheet; TSS does not represent this product as USP, BP, or EP grade.
How should Fluoresceinamine, isomer I be handled?
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Fluoresceinamine, isomer I is a warning hazardous substance. It is harmful if swallowed (H302), causes skin irritation (H315), causes serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment including a dust mask type N95 (US), eyeshields, faceshields, and gloves should be used. Handle in a well-ventilated area.
Is Fluoresceinamine, isomer I suitable for export?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including Fluoresceinamine, isomer I.
How can I request a sample or quote for Fluoresceinamine, isomer I?
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To request a sample or a quote for Fluoresceinamine, isomer I, please contact our sales team through the designated channels on the Tech Serve Solutions website.
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