Description

Dinophysistoxin 4 is a potent marine biotoxin belonging to the okadaic acid class, identified by CAS No. 162795-98-4. This compound is of critical importance for research and regulatory monitoring due to its role in diarrhetic shellfish poisoning (DSP) and its specific mechanism of action as a protein phosphatase inhibitor. It is primarily needed by analytical laboratories, toxicology researchers, and food safety agencies for use as a certified reference material, diagnostic standard, and in the development of detection assays to ensure seafood safety and public health protection.

Application

• Certified Reference Standard: For the precise calibration and validation of analytical instruments like LC-MS/MS in food and environmental testing laboratories.
• Toxicological Research: Used in biomedical and pharmacological studies to investigate protein phosphatase inhibition, cellular signaling pathways, and toxin metabolism.
• Diagnostic Development: Serves as a critical antigen and standard in the development and quality control of immunoassay kits (e.g., ELISA) for rapid shellfish toxin screening.
• Regulatory Compliance & Monitoring: Essential for government and commercial laboratories performing mandatory testing of shellfish and seawater for DSP toxins to comply with international food safety regulations.
• Method Development & Proficiency Testing: Used to develop, optimize, and verify new analytical methods and as a component in inter-laboratory comparison studies.
• Pharmaceutical Probe: Utilized as a biochemical tool in cell biology to study processes regulated by serine/threonine protein phosphatases.

Basic Information

Product Name	Dinophysistoxin 4
CAS No.	162795-98-4
Molecular Formula	C₄₄H₆₈O₁₃
Molecular Weight	828.99 g/mol
Synonyms	DTX4; 35-Methylokadaic acid; Dinophysistoxin-4; 35-Methyl-Okadaic Acid; (2R)-2-[(1S,4R,7S,13S,14R,16S,19S)-16-[(2S)-5-[(2R,5S,6R)-5-(Carboxymethyl)-5-methyl-6-[(2S,3S,6R)-3-methyl-6-[(1R)-1-methylpentyl]-2-tetrahydropyranyl]oxan-2-yl]pentan-2-yl]-7,14-dihydroxy-4,10,10,13,19-pentamethyl-3,20-dioxo-2,8-dioxahexacyclo[11.7.1.0¹,¹⁹.0⁴,¹⁸.0⁷,¹⁵.0¹³,¹⁷]henicosa-5,11-dien-19-yl]-2-methylbutanoic acid
EINECS	Contact for details

Quality Control

Our Dinophysistoxin 4 is produced and handled under strict quality protocols suitable for high-purity reference materials. Each batch undergoes rigorous identity confirmation and purity analysis using advanced chromatographic and spectroscopic techniques. A comprehensive Certificate of Analysis (COA) is provided, detailing batch-specific purity, chromatographic profile, and storage conditions to ensure traceability and reliability for your critical applications.

Storage

Preserve in a tightly closed container, protected from light. Store at -20°C or below. This product is hygroscopic (moisture-sensitive) and must be kept under desiccated conditions. Allow the vial to equilibrate to room temperature in a desiccator before opening to prevent condensation and moisture uptake.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (HPLC-MS)	Conforms to reference standard
Purity (HPLC)	≥ 95%
Related Substances (HPLC)	Total impurities ≤ 5.0%
Water Content (KF)	≤ 2.0%
Specific Optical Rotation	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.