3,3′-Dibutylthiacarbocyanine iodide
3,3′-Dibutylthiacarbocyanine iodide (CAS 53213-85-7) is a lipophilic fluorescent probe with a molecular weight of 548.55. This compound is particularly useful as a fluorescent indicator and is employed in biochemical research and detection applications. Its properties make it suitable for studying cell membranes and as a stain in various biological assays, particularly for flow cytometry.
- IUPAC
- DiSC4(3)
- Synonyms
- 3,3′-Dibutylthiacarbocyanine iodideDiSC4(3)C25H29IN2S2

Fluorescent Staining
3,3′-Dibutylthiacarbocyanine iodide serves as a fluorescent stain for biological samples. Its lipophilic nature allows it to intercalate into cell membranes, enabling visualization and analysis.
Flow Cytometry
This compound is a lipophilic probe specifically designed for use in flow cytometry. It can be used to assess membrane potential and study cellular characteristics in cell populations.
Biochemical Assays
As a fluorescent indicator, it finds application in various biochemical assays where membrane properties or cellular integrity needs to be monitored. It is often used in combination with other reagents for enhanced detection.
Detection and Imaging
The fluorescence properties of 3,3′-Dibutylthiacarbocyanine iodide make it a valuable tool for detection and imaging in biological research, particularly for studies involving lipophilic environments.
| Molecular weight | 548.55 |
|---|---|
| Empirical formula | C25H29IN2S2 |
| Assay | ≥98.0% (TLC)≥98.0% |
| Grade | for fluorescence |
| Solubility | DMSO: solublemethanol: soluble |

Hazard statements
- 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, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Fluorescence | λex 559 nm; λem 604 nm in phosphate buffer/SDS pH 7.0 |
|---|
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 3,3′-Dibutylthiacarbocyanine iodide used for?
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3,3′-Dibutylthiacarbocyanine iodide is used as a lipophilic fluorescent probe, particularly for applications in flow cytometry, cell membrane studies, and as a fluorescent indicator in biochemical detection and imaging.
What are the CAS number and formula for 3,3′-Dibutylthiacarbocyanine iodide?
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The CAS number for 3,3′-Dibutylthiacarbocyanine iodide is 53213-85-7. Its empirical formula (Hill notation) is C25H29IN2S2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3,3′-Dibutylthiacarbocyanine iodide with a purity of ≥98.0% (TLC) and ≥98.0%, graded for fluorescence. We do not represent this product as USP, BP, or EP grade.
How should 3,3′-Dibutylthiacarbocyanine iodide be handled safely?
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When handling 3,3′-Dibutylthiacarbocyanine iodide, it is essential to wear a dust mask type N95 (US), eyeshields, and gloves. Avoid breathing dust/fume/gas/mist/vapours/spray. It can cause skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335).
Is 3,3′-Dibutylthiacarbocyanine iodide shipped internationally?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 3,3′-Dibutylthiacarbocyanine iodide, and handles international shipments.
How can I request a quote or sample for 3,3′-Dibutylthiacarbocyanine iodide?
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To request a quote or sample for 3,3′-Dibutylthiacarbocyanine iodide, please contact our sales team through the TSS website or by phone.
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