5(6)-Carboxynaphthofluorescein
5(6)-Carboxynaphthofluorescein (CAS: 128724-35-6, C29H16O7) is a high-purity fluorescent indicator offered by Tech Serve Solutions. This compound serves as a valuable intravesicular pH-sensitive probe, enabling the study of ion channel activity. Its distinct fluorescence properties make it suitable for various research applications, particularly in biophysical and biochemical investigations.

Intravesicular pH Probing
Used as an intravesicular pH-sensitive probe to investigate the activity, selectivity, and cooperativity of ion channels, such as gramicidin A.
Fluorescence Spectroscopy
Suitable for fluorescence applications due to its distinct excitation and emission spectra, making it useful in various spectroscopic analyses.
Biochemical Research
A valuable reagent for biochemical studies requiring pH-sensitive fluorescent indicators, aiding in the understanding of cellular processes.
| Empirical formula | C29H16O7 |
|---|---|
| Assay | ≥90% (TLC) |
| Application | 5(6)-Carboxynaphthofluorescein (CNF) may be used as an intravesicular pH-sensitive probe for the detection of activity, selectivity and cooperativity of ion channels such as gramicidin A. |
| Suitability | suitable for fluorescence |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Product Line | BioReagent |
|---|---|
| Pka  | 7.6 |
| Fluorescence | λex 512 nm; λem 567 nm (acid/neutral)λex 598 nm; λem 668 nm (basic) |
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 5(6)-Carboxynaphthofluorescein used for?
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5(6)-Carboxynaphthofluorescein (CNF) is primarily used as an intravesicular pH-sensitive probe for studying ion channel activity, selectivity, and cooperativity, such as with gramicidin A.
What is the CAS number and chemical formula for 5(6)-Carboxynaphthofluorescein?
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The CAS number is 128724-35-6 and the chemical formula is C29H16O7.
What grade and purity does Tech Serve Solutions supply for 5(6)-Carboxynaphthofluorescein?
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Tech Serve Solutions supplies 5(6)-Carboxynaphthofluorescein with an assay of ≥90% (TLC). We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade unless explicitly stated.
What are the safety and handling recommendations for 5(6)-Carboxynaphthofluorescein?
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For safe handling, it is recommended to use Eyeshields and Gloves. A type N95 (US) or type P1 (EN143) respirator filter should be used. The product has a WGK Germany rating of 3, indicating a high hazard to water.
How is 5(6)-Carboxynaphthofluorescein packed, shipped, and exported?
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Tech Serve Solutions ensures secure packing and expert handling for all shipments. We are a specialist global supplier and exporter of fine chemicals, adhering to international shipping regulations.
How can I request a sample or quote for 5(6)-Carboxynaphthofluorescein?
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To request a sample or obtain a quotation, please contact our customer service team through the dedicated portal on our website.
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