Cas 489-56-5,(2R,3R,4R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,4,7,8-tetrol

489-56-5

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Basic information

Product Name: (2R,3R,4R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,4,7,8-tetrol
Synonyms: (2R,3R,4R)-2-(3,4-Dihydroxyphenyl)chromane-3,4,7,8-tetrol; 2H-1-benzopyran-3,4,7,8-tetrol, 2-(3,4-dihydroxyphenyl)-3,4-dihydro-, (2R,3R,4R)-
CAS NO:489-56-5
Molecular Formula: C₁₅H₁₄O₇
Molecular Weight: 306.2675
EINECS: N/A
Product Categories: N/A
Mol File: 489-56-5.mol

Chemical Properties

Melting Point: 229 °C (decomp)
Boiling Point: 607.1°C at 760 mmHg
Flash Point: 320.9°C
Appearance: N/A
Density: 1.709g/cm³
Vapor Pressure: 1.37E-15mmHg at 25°C
Refractive Index: 1.78
Storage Temp.: N/A
Solubility: N/A
PKA: 9.53±0.70(Predicted)
CAS DataBase Reference: (2R,3R,4R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,4,7,8-tetrol(CAS DataBase Reference)
NIST Chemistry Reference: (2R,3R,4R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,4,7,8-tetrol(489-56-5)
EPA Substance Registry System: (2R,3R,4R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,4,7,8-tetrol(489-56-5)

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: 489-56-5(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 489-56-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,8 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 489-56:
(5*4)+(4*8)+(3*9)+(2*5)+(1*6)=95
95 % 10 = 5
So 489-56-5 is a valid CAS Registry Number.

489-56-5Upstream product

64-17-5 ethanol

489-56-5Downstream Products

489-56-5Relevant academic research and scientific papers

Isolation of -linked Biflavanoids from Acacia melanoxylon: First Examples of a New Class of Single Ether-linked Proanthocyanidin Dimers

Foo, Lai Yeap

, p. 1505 - 1506 (2007/10/02)

The isolation of the unique -linked biflavanoids, -bis(2,3-cis-3,4-trans-3,3',4',7,8-pentahydroxyflavan) (5) and the isomeric 2,3-cis-3,4-trans-3,3',4',7'8-pentahydroxyflavan--2,3-cis-3,4-cis-3,3,4',7,8-pentahydroxyflavan (6), from the heartwood of Acacia melanoxylon further extends the heterogeneity of the interflavanoid linkage among natural proanthocyanidin dimers and oligomers.

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