KRIBB3
KRIBB3 (CAS: 129414-88-6), a small molecule with the chemical formula C19H19NO4 and a molecular weight of 325.36 g/mol, is a research chemical supplied by Tech Serve Solutions. This white to off-white solid is primarily utilised in biological research, particularly in cell biology and kinase/phosphatase studies, serving as a tool to investigate cellular signaling pathways and protein kinase inhibition.
- IUPAC
- 5-(5-Ethyl-2-hydroxy-4-methoxyphenyl)-4-(4-methoxyphenyl)isoxazole

Cell Biology Research
KRIBB3 serves as a valuable reagent in cell biology studies, enabling researchers to probe cellular mechanisms and signaling pathways. Its properties are particularly relevant for investigating cellular responses and functions.
Kinase/Phosphatase Inhibitor Studies
As a potential inhibitor of protein kinases, KRIBB3 is employed in research focused on kinase biology. It aids in understanding the roles of kinases and phosphatases in cellular processes and disease states.
Cell Signaling Investigations
This compound is utilized in the study of cell signaling pathways, offering a means to modulate or investigate specific signaling cascades. Its application extends to neuroscience research areas involving cell signaling.
| Molecular weight | 325.36 |
|---|---|
| Empirical formula | C19H19NO4 |
| Assay | ≥98% (HPLC) |
| Form | solid |
| Colour | white to off-white |
| Solubility | DMSO: soluble15 mg/mL |
| Storage temperature | −20°C |

Hazard statements
- H301Toxic if swallowed
- H413May cause long-lasting harmful effects to aquatic life
Precautionary statements
- P301IF SWALLOWED
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Storage Condition | protect from lightunder inert gas |
|---|
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 KRIBB3 used for?
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KRIBB3 is used in research, particularly within cell biology, cell signaling, and neuroscience. It is also applied in studies related to kinase/phosphatase biology and protein kinase inhibition.
What are the CAS number and formula for KRIBB3?
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The CAS number for KRIBB3 is 129414-88-6, and its empirical formula is C19H19NO4.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies KRIBB3 with a purity of ≥98% (HPLC). This product is intended for research and laboratory use and is not represented as USP, BP, EP, or any pharmacopoeia grade.
How should KRIBB3 be handled safely?
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KRIBB3 is classified with GHS06 symbol and a Danger signal word, carrying hazard statements H301 (Toxic if swallowed) and H413 (May cause long lasting harmful effects to aquatic life). Appropriate personal protective equipment, including a dust mask (N95), eyeshields, face shields, and gloves, should be used. Handle with extreme care in a well-ventilated area.
How is KRIBB3 packed, shipped, and exported?
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KRIBB3 is typically supplied as a white to off-white solid, stored at -20°C, and protected from light under an inert gas. Shipments comply with relevant transportation regulations, including UN 2811 classification for toxic solids.
How can I request a sample or quote for KRIBB3?
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To request a sample or obtain a quote for KRIBB3, please contact the Tech Serve Solutions sales team through our website or by phone. Our experts will be pleased to assist you with your research requirements.
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