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(+)-2,3-trans-3,4-trans-3,4-dihydroxy-3',4',7-trimethoxyflavan is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

31143-28-9

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31143-28-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 31143-28-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,1,4 and 3 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 31143-28:
(7*3)+(6*1)+(5*1)+(4*4)+(3*3)+(2*2)+(1*8)=69
69 % 10 = 9
So 31143-28-9 is a valid CAS Registry Number.

31143-28-9Relevant academic research and scientific papers

HETEROCYCLES. XVIII. SYNTHESIS OF THE RACEMATES OF NATURALLY OCCURRING FLAVONOIDS

Takahashi, Hiroshi,Kubota, Yumiko,Igushi, Mieko,Fang, Lin,Onda, Masayuki

, p. 369 - 377 (2007/10/02)

Racemic aromadendrin and fustin have been stereoselectively synthesized.Reduction of the O-substituted derivatives of these flavanonols provides the corresponding derivatives of gleditsin, leucopelargonidin and mollisacacidin (leucofisetinidin).

Synthesis of Condensed Tannins. Part 11. Intramolecular Enantiomerism of the Constituent Units of Tannins from the Anacardiaceae: Stoicheiometric Control in Direct Synthesis: Derivation of 1H Nuclear Magnetic Resonance Parameters Applicable to

Viviers, Phillip M.,Kolodziej, Herbert,Young, Desmond A.,Ferreira, Daneel,Roux, David G.

, p. 2555 - 2562 (2007/10/02)

Tannins from the heartwoods of Schinopsis spp. (quebracho) and Rhus spp.(karee) represent mutual condensation products of their associated precursors (2S,3R,4S)(-)-leucofisetinidin, (2R,3S)-(+)-catechin and, to a minor extent, (2R,3R)-(-)-epicatechin.The

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