1-(2-Isothiocyanatoethyl)-4-[2-(3,4-dihydro-2H-1-benzopyran-6-yl)-5-oxazolyl]pyridinium bromide
1-(2-Isothiocyanatoethyl)-4-[2-(3,4-dihydro-2H-1-benzopyran-6-yl)-5-oxazolyl]pyridinium bromide (CAS 155863-02-8) is a water-soluble fluorescent agent with a large Stoke's shift and photostability. Its molecular formula is C20H18BrN3O2S and it has a molecular weight of 444.34 g/mol. This compound is primarily utilised for its fluorescent properties in various research and analytical applications.
- Synonyms
- C20H18BrN3O2S
![1-(2-Isothiocyanatoethyl)-4-[2-(3,4-dihydro-2H-1-benzopyran-6-yl)-5-oxazolyl]pyridinium bromide (C20H18BrN3O2S) — chemical structure, CAS 155863-02-8; Life Science, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F155863-02-8.png&w=3840&q=75)
Fluorescent Labeling
This compound serves as a fluorescent label, owing to its photostable nature and large Stoke's shift. It is suitable for applications requiring a water-soluble fluorescent agent.
Fluorescence Spectroscopy
With a distinct excitation maximum at 386 nm and emission maximum at 532 nm, it is well-suited for fluorescence spectroscopy and imaging techniques where precise spectral characteristics are critical.
Biochemical Assays
Its water solubility and fluorescent properties make it a useful reagent in biochemical assays and studies involving biological samples or systems where fluorescence detection is employed.
| Molecular weight | 444.34 |
|---|---|
| Empirical formula | C20H18BrN3O2S |
| Assay | ≥95.0% (HPCE) |
| Storage temperature | 2-8°C |
| Application | 1-(2-Isothiocyanatoethyl)-4-[2-(3,4-dihydro-2H-1-benzopyran-6-yl)-5-oxazolyl]pyridinium bromide is suitable for use as a photostable, large Stoke′s shift , water soluble fluorescence agent. |
| Suitability | suitable for fluorescence |

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 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Product Line | BioReagent |
|---|---|
| Fluorescence | λex 386 nm±10 nm; λem 532 nm in 0.1 M phosphate 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 1-(2-Isothiocyanatoethyl)-4-[2-(3,4-dihydro-2H-1-benzopyran-6-yl)-5-oxazolyl]pyridinium bromide used for?
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This compound is primarily used as a photostable, water-soluble fluorescent agent with a large Stoke's shift, suitable for fluorescence applications and assays.
What is the CAS number and formula for this compound?
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The CAS number is 155863-02-8 and the empirical formula is C20H18BrN3O2S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this compound with an assay of ≥95.0% (HPCE). This is a research grade material and not represented as USP, BP, EP, or pharmacopoeia grade.
What are the safety and handling precautions for this chemical?
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This compound is classified with a Warning signal word and carries hazard statements H315 (causes skin irritation), H319 (causes serious eye irritation), and H335 (may cause respiratory irritation). Appropriate personal protective equipment includes a dust mask (type N95), eyeshields, and gloves. Handle in a well-ventilated area and avoid dust formation.
How is this product packed, shipped, and exported?
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We take great care in packing our chemicals to ensure safe transit. As a global supplier, Tech Serve Solutions exports chemicals worldwide, adhering to all relevant shipping and customs regulations.
How can I request a sample or a quote?
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To request a sample or a quote, please contact our sales team through the website or via the provided contact details. Please reference the product name and CAS number.
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