Douglas firlin

Douglassin structural formula

Structural formula

Business number 051U
Molecular formula C15H12O7
Molecular weight 304.3
label

Taxifolin,

taxane,

Douglas firrin,

(2R,3R)-Dihydroquercetin,

(2R,3R)-3,3′,4′,5,7-Pentahydroxyflavanone,

(2R,3R)-Dihydroquercetin

Numbering system

CAS number:480-18-2

MDL number:MFCD00006845

EINECS number:207-543-4

RTECS number:None

BRN number:5299277

PubChem number:24887336

Physical property data

1. Character:Undetermined


2. Density (g/ m3,25/4): Undetermined


3. Relative vapor density (g/cm3,AIR=1): Not OK


4. Melting point (ºC):230-233


5. Boiling point (ºC,Normal pressure): Undetermined


6. Boiling point (ºC,5.2kPa): Undetermined


7. Refractive Index: Undetermined


8. Flash Point (ºC): Undetermined


9. Specific optical rotation (º): Undetermined


10. Autoignition point or ignition temperature (ºC): Undetermined


11. Vapor pressure (kPa,25ºC): Undetermined


12. Saturated vapor pressure (kPa,60ºC): Undetermined


13. Heat of combustion (KJ/mol): Undetermined


14. Critical temperature (ºC): Undetermined


15. Critical pressure (KPa): Undetermined


16. Oil and water (octanol / Log value of the partition coefficient (water): not determined


17. Explosion limit (%,V/V): Undetermined


18. Lower explosion limit (%,V/V): Undetermined


19. Solubility: Undetermined

Toxicological data

1 , acute toxicity: intraperitoneal administration in ratsLD50: 1200mg/kg, Biochemistry Metabolism (intermediary) Influence inflammation or mediate inflammation;


Mouse transperitoneallyLD50: 985mg/kg, no details except lethal dose;


2Mutation data: Microbial organisms TEST Systemic mutations: Bacteria Salmonella typhimurium: 100ug/Plate


Microbial organismTEST system mutation: bacteriaSalmonella typhimurium: 1660nmol/Plate


CytogeneticsanalysisTESTSystem: RodentsHamster fibroblasts:1 gm/L/ 48H

Ecological data

This substance may be harmful to the environment, and special attention should be paid to water bodies.

Molecular structure data

1 Molar refractive index:73.31


2 Molar Volumem3/mol)167.9


3 Isotonic specific volume (90.2K):549.9


4 Surface tensiondyne/cm)114.8


5 Polarizability10-24 cm329.06

Compute chemical data

1. Hydrophobic parameters Calculate the reference value (XlogP):1.5


2. Hydrogen Bonding Number of donors: 5


3. Hydrogen Bonding Number of receptors: 7


4. Rotatable Number of chemical bonds: 1


5. Interchange Number of isomers:998


6. Topological molecules Polar surface area (TPSA):128


7. Heavy Atom Quantity: 22


8. Surface charge :0


9. Complexity :428


10. Isotope atomic number:0


11. Determine the number of atomic stereocenters:2


12. Uncertain number of atomic stereocenters:0


13. Determine the number of stereocenters of chemical bonds:0


14. Uncertain number of chemical bond stereocenters:0


15. Number of covalent bond units: 1

Properties and stability

Use and store according to specifications, no decomposition will occur, and avoid contact with oxides

Storage method

Save in a sealed manner and place it in a ventilated and dry place to avoid contact with other oxides.

Synthesis method

The plant source is Pinus pine[Pseudotsuga taxifolia Britt. (Douglas fir)], Hamamelidaceae plant mosquito Mother tree(Distylium racemosum Sieb.et Zucc .)etc.

Purpose

Anti-leukemiaP388Cellular effects and inhibition of Staphylococcus aureus , Escherichia coli, Shigella dysenteriae and Typhoid bacilli.

This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.polyether-factory.com/archives/20215

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