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CAS

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78284-46-5

(2R,3S,4R)-2,3-trans-3,4-trans-3',4',5,7-tetramethoxy-4-(2,4-dimethoxyphenyl)flavan-3-ol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

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  • 78284-46-5 Structure

  • Basic information

    1. Product Name: (2R,3S,4R)-2,3-trans-3,4-trans-3',4',5,7-tetramethoxy-4-(2,4-dimethoxyphenyl)flavan-3-ol
    2. Synonyms: (2R,3S,4R)-2,3-trans-3,4-trans-3',4',5,7-tetramethoxy-4-(2,4-dimethoxyphenyl)flavan-3-ol
    3. CAS NO:78284-46-5
    4. Molecular Formula:
    5. Molecular Weight: 482.53
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 78284-46-5.mol

  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: N/A
    3. Flash Point: N/A
    4. Appearance: N/A
    5. Density: N/A
    6. Refractive Index: N/A
    7. Storage Temp.: N/A
    8. Solubility: N/A
    9. CAS DataBase Reference: (2R,3S,4R)-2,3-trans-3,4-trans-3',4',5,7-tetramethoxy-4-(2,4-dimethoxyphenyl)flavan-3-ol(CAS DataBase Reference)
    10. NIST Chemistry Reference: (2R,3S,4R)-2,3-trans-3,4-trans-3',4',5,7-tetramethoxy-4-(2,4-dimethoxyphenyl)flavan-3-ol(78284-46-5)
    11. EPA Substance Registry System: (2R,3S,4R)-2,3-trans-3,4-trans-3',4',5,7-tetramethoxy-4-(2,4-dimethoxyphenyl)flavan-3-ol(78284-46-5)

  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: N/A
    4. WGK Germany:
    5. RTECS:
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 78284-46-5(Hazardous Substances Data)

78284-46-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 78284-46-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,2,8 and 4 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 78284-46:
(7*7)+(6*8)+(5*2)+(4*8)+(3*4)+(2*4)+(1*6)=165
165 % 10 = 5
So 78284-46-5 is a valid CAS Registry Number.

78284-46-5Relevant articles and documents

From the gold-catalysed benzylation of arenes to the regio- and stereoselective synthesis of procyanidins dimers

Fabre, Sandy,Gueroux, Marie,Nunes, Emeline,Szlosek-Pinaud, Magali,Pianet, Isabelle,Fouquet, Eric

, p. 3045 - 3051 (2015)

This work reports on a new intermolecular C-C coupling reaction between electron rich arenes and benzylic alcohols or ethers, catalysed by gold(III) salts, or other catalysts such as gold(I) and iron (III), and its application to the regio- and stereoselective synthesis of procyanidins dimers B1 and B3.

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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