3,3′-Dipropylthiacarbocyanine iodide
3,3′-Dipropylthiacarbocyanine iodide (CAS: 53336-12-2) is a fluorescent probe with the empirical formula C23H25IN2S2 and a molecular weight of 520.49 g/mol. This compound is primarily utilised in biochemical research and as a fluorescent indicator. Its spectral properties, including absorption and fluorescence emission maxima, make it valuable for various biological and chemical assays where fluorescence detection is required.
- IUPAC
- 3-Propyl-2-[3-[3-propyl-2(3H)benzothiazolylidene]-1-propenyl]benzothiazolium iodide,DiSC3(3)
- Synonyms
- 3-Propyl-2-[3-[3-propyl-2(3H)benzothiazolylidene]-1-propenyl]benzothiazolium iodideDiSC3(3)

Fluorescent Indicator
3,3′-Dipropylthiacarbocyanine iodide serves as a fluorescent indicator, particularly in biological and chemical systems. Its spectral characteristics are leveraged for quantitative and qualitative analysis through fluorescence measurements.
Lipophilic and Membrane Probes
As a lipophilic probe, this compound can be used to study cell membranes and other lipid-rich structures. Its fluorescence properties can provide insights into membrane fluidity, potential, and dynamics.
Biochemical Research Reagent
This chemical is employed in various biochemical research applications. It functions as a valuable tool for researchers investigating cellular processes and molecular interactions that can be detected via fluorescence.
| Molecular weight | 520.49 |
|---|---|
| Empirical formula | C23H25IN2S2 |
| Assay | 98% |
| Melting point | 288 °C (dec.)(lit.) |

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) | 26-37 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Absorption | λmax 559 nm |
|---|---|
| Fluorescence | λex 559 nm; λem 575 nm in methanol |
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′-Dipropylthiacarbocyanine iodide used for?
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3,3′-Dipropylthiacarbocyanine iodide is used as a fluorescent indicator, a lipophilic and membrane probe, and in general biochemical research.
What are the CAS number and formula for 3,3′-Dipropylthiacarbocyanine iodide?
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The CAS number is 53336-12-2 and the empirical formula is C23H25IN2S2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3,3′-Dipropylthiacarbocyanine iodide with a minimum assay of 98%. TSS does not represent this product as USP, BP, or EP grade.
What are the safety and handling recommendations for this compound?
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This compound is classified as a Warning with hazards including skin irritation (H315), eye irritation (H319), and respiratory irritation (H335). It is recommended to use a dust mask type N95 (US), eyeshields, and gloves. Ensure proper ventilation and avoid inhaling dust.
How is 3,3′-Dipropylthiacarbocyanine iodide packed and shipped?
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Tech Serve Solutions, as a specialist global supplier and exporter, ensures appropriate packaging and adherence to regulations for international shipment of chemicals like 3,3′-Dipropylthiacarbocyanine iodide.
How can I request a sample or quote for 3,3′-Dipropylthiacarbocyanine iodide?
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To request a sample or a quote, please contact the Tech Serve Solutions sales team through our website or by phone, providing the product name and CAS number.
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