Okadaic acid (Standard) , CAS No.78111-17-8

CAS: 78111-17-8 Cat. No.: O1417261 Molecular Weight: 805 EC Number: 616-589-8 PubChem CID: 446512

Storage

Store at -20°C

Shipped In

Ice chest + Ice pads

Overview

Okadaic acid (Standard) is the analytical standard of Okadaic acid. This product is intended for research and analytical applications. Okadaic acid , a marine toxin, is an inhibitor of protein phosphatases (PP). Okadaic acid has a significantly higher affinity for PP2A ( IC 50 =0.1-0.3 nM), and inhibits PP1 ( IC 50 =15-50 nM), PP3 ( IC 50 =3.7-4 nM), PP4 ( IC 50 =0.1 nM), PP5 ( IC 50 =3.5 nM), but does not inhibit PP2C. Okadaic acid increases of phosphorylation of a number of proteins by inhibiting PP, and acts a tumor promoter. Okadaic acid induces tau phosphorylation.

Specifications

Storage

Store at -20°C

Shipped In

Ice chest + Ice pads

This product requires cold chain shipping. Ground and other economy services are not available.

Names and Identifiers

• Canonical Smiles: CC1CCC2(CCCCO2)OC1C(C)CC(C3C(=C)C(C4C(O3)CCC5(O4)CCC(O5)C=CC(C)C6CC(=CC7(O6)C(CCC(O7)CC(C)(C(=O)O)O)O)C)O)O
• IUPAC Name: (2R)-3-[(2S,6R,8S,11R)-2-[(E,2R)-4-[(2S,2'R,4R,4aS,6R,8aR)-4-hydroxy-2-[(1S,3S)-1-hydroxy-3-[(2S,3R,6S)-3-methyl-1,7-dioxaspiro[5.5]undecan-2-yl]butyl]-3-methylidenespiro[4a,7,8,8a-tetrahydro-4H-pyrano[3,2-b]pyran-6,5'-oxolane]-2'-yl]but-3-en-2-yl]-11-hydroxy-4-methyl-1,7-dioxaspiro[5.5]undec-4-en-8-yl]-2-hydroxy-2-methylpropanoic acid
• InChIKey: QNDVLZJODHBUFM-WFXQOWMNSA-N
• INCHI: 1S/C44H68O13/c1-25-21-34(55-44(23-25)35(46)12-11-31(54-44)24-41(6,50)40(48)49)26(2)9-10-30-14-18-43(53-30)19-15-33-39(57-43)36(47)29(5)38(52-33)32(45)22-28(4)37-27(3)13-17-42(56-37)16-7-8-20-51-42/h9-10,23,26-28,30-39,45-47,50H,5,7-8,11-22,24H2,1-4,6H3,(H,48,49)/b10-9+/t26-,27-,28+,30+,31+,32+,33-,34+,35-,36-,37+,38+,39-,41-,42+,43-,44-/m1/s1
• Isomeric SMILES: C[C@@H]1CC[C@]2(CCCCO2)O[C@@H]1[C@@H](C)C[C@@H]([C@@H]3C(=C)[C@H]([C@H]4[C@H](O3)CC[C@]5(O4)CC[C@@H](O5)/C=C/[C@@H](C)[C@@H]6CC(=C[C@@]7(O6)[C@@H](CC[C@H](O7)C[C@](C)(C(=O)O)O)O)C)O)O
• WGK Germany: 3
• RTECS: AA8227800
• PubChem CID: 446512
• Molecular Weight: 805

Taxonomic Classification

Taxonomy Tree

• Kingdom Organic compounds
  • Superclass Organic oxygen compounds
    • Class Organooxygen compounds
      • Subclass Ethers
        • Level5 Acetals
          • Level6 Ketals

• Kingdom: Organic compounds
• Superclass: Organic oxygen compounds
• Class: Organooxygen compounds
• Subclass: Ethers
• Intermediate Tree Nodes: Acetals
• Direct Parent: Ketals
• Alternative Parents: Pyrans Oxanes Alpha hydroxy acids and derivatives Tetrahydrofurans Tertiary alcohols Secondary alcohols Oxacyclic compounds Monocarboxylic acids and derivatives Dialkyl ethers Carboxylic acids Organic oxides Hydrocarbon derivatives Carbonyl compounds
• Molecular Framework: Aliphatic heteropolycyclic compounds
• Substituents: Ketal - Alpha-hydroxy acid - Hydroxy acid - Oxane - Pyran - Tertiary alcohol - Tetrahydrofuran - Secondary alcohol - Organoheterocyclic compound - Oxacycle - Monocarboxylic acid or derivatives - Dialkyl ether - Carboxylic acid - Carboxylic acid derivative - Hydrocarbon derivative - Carbonyl group - Organic oxide - Alcohol - Aliphatic heteropolycyclic compound
• Description: This compound belongs to the class of organic compounds known as ketals. These are acetals derived from ketones by replacement of the oxo group by two hydrocarbyloxy groups R2C(OR)2 ( R not Hydrogen ). This term, once abandoned, has been reinstated as a subclass of acetals.
• External Descriptors: polycyclic ether

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

References

1. Yanan Liu, Jing Sun, Youcong Gong, Hui Zhou, Xu Chen, Xufeng Zhu, Yingyu Zhao, Yayu Wen, Xiuying Qin, Jie Liu.  (2019)  Peptide-Modified Mo Polyoxometalate Nanoparticles Suppress Zn2+-Induced Aβ Aggregation.  ChemNanoMat,  5  (7): (897-910).  [PMID:] [10.1002/cnma.201900057]

2. Ming Wang, Lizhen Zhao, Yuling Hu, Gongke Li.  (2025)  Target-responsive DNAzyme hydrogel reinforced by click reaction for surface enhanced Raman scattering detection of okadaic acid.  SENSORS AND ACTUATORS B-CHEMICAL,      [PMID:] [10.1016/j.snb.2025.137756]