Cas 69082-78-6,(2R,3S,4R)-2,3-trans-3,4-trans-4-(2,4-Dihydroxyphenyl)-3',4',7-trihydroxyflavan-3-ol

69082-78-6

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Basic information

Product Name: (2R,3S,4R)-2,3-trans-3,4-trans-4-(2,4-Dihydroxyphenyl)-3',4',7-trihydroxyflavan-3-ol
Synonyms:
CAS NO:69082-78-6
Molecular Formula:
Molecular Weight: 382.37
EINECS: N/A
Product Categories: N/A

Chemical Properties

Melting Point: N/A
Boiling Point: N/A
Flash Point: N/A
Appearance: N/A
Density: N/A
Refractive Index: N/A
Storage Temp.: N/A
Solubility: N/A
CAS DataBase Reference: (2R,3S,4R)-2,3-trans-3,4-trans-4-(2,4-Dihydroxyphenyl)-3',4',7-trihydroxyflavan-3-ol(CAS DataBase Reference)
NIST Chemistry Reference: (2R,3S,4R)-2,3-trans-3,4-trans-4-(2,4-Dihydroxyphenyl)-3',4',7-trihydroxyflavan-3-ol(69082-78-6)
EPA Substance Registry System: (2R,3S,4R)-2,3-trans-3,4-trans-4-(2,4-Dihydroxyphenyl)-3',4',7-trihydroxyflavan-3-ol(69082-78-6)

Safety Data

Hazard Codes: N/A
Statements: N/A
Safety Statements: N/A
WGK Germany:
RTECS:
HazardClass: N/A
PackingGroup: N/A
Hazardous Substances Data: 69082-78-6(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 69082-78-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,0,8 and 2 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 69082-78:
(7*6)+(6*9)+(5*0)+(4*8)+(3*2)+(2*7)+(1*8)=156
156 % 10 = 6
So 69082-78-6 is a valid CAS Registry Number.

69082-78-6Upstream product

69082-78-6Downstream Products

69082-78-6Relevant academic research and scientific papers

Spectroscopic Properties of Free Phenolic 4-Arylflavan-3-ols as Models for Natural Condensed Tannins

Zyl, Pieter W. van,Steynberg, Jan P.,Brandt, Edward V.,Ferreira, Daneel

, p. 1057 - 1063 (1993)

A unique range of free phenolic 4-arylflavan-3-ols consisting of four sets (3',4',5,7-tertrahydroxyflavan-3-ol or its 5-deoxy analogue coupled to phloroglucinol or resorcinol), each composed of three diastereomers (2,3-trans-3,4-trans, 2,3-trans-3,4-cis and 2,3-cis-3,4-trans) were synthesized to assess their spectroscopic properties. 1H and 13C NMR and circular dichroism data are related to selected structural and stereochemical features with a view to modelling natural phenolic oligoflavanoids. - Key words: 4-Arylflavan-3-ols 1H NMR 13C NMR Circular dichroism Condensed tannins

Synthesis of Condensed Tannins. Part 1. Stereoselective and Stereospecific Syntheses of Optically Pure 4-Arylflavan-3-ols, and Assessment of their Absolute Stereochemistry at C-4 by means of Circular Dichroism

Botha, Jacobus J.,Young, Desmond A.,Ferreira, Daneel,Roux, David G.

, p. 1213 - 1219 (2007/10/02)

Stereoselective and also stereospecific condensation at C-4 of flavan-3,4-diols of known absolute configuration with phloroglucinol and resorcinol in acid medium proceeds at ambient temperatures with partial retention of configuration for 2,3-trans-isomers and with inversion for 2,3-cis-analogues.Circular dichroism spectra of the resultant 4-arylflavan-3-ols all exhibit multiple Cotton effects.The sign of high intensity Cotton effects to low wavelength, contributed by aryl chromophores at C-4, may almost invariably be correlated with the absolute configuration at this chiral centre of 2,3-trans-3,4-trans, 2,3-trans-3,4-cis, and 2,3-cis-3,4-trans-isomers.

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