81600-43-3

Basic information

• Product Name: (2R,3S)-2,3-trans-6,8-bis-<(2R,3S,4R)-2,3-trans-3,4-trans-3,3',4',7-tetrahydroxyflavan-4-yl>-3,3',4',5,7-pentahydroxyflavan
• CAS NO: 81600-43-3
• Molecular Weight: 834.787
• Mol File: 81600-43-3.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: (2R,3S)-2,3-trans-6,8-bis-<(2R,3S,4R)-2,3-trans-3,4-trans-3,3',4',7-tetrahydroxyflavan-4-yl>-3,3',4',5,7-pentahydroxyflavan(CAS DataBase Reference)
• NIST Chemistry Reference: (2R,3S)-2,3-trans-6,8-bis-<(2R,3S,4R)-2,3-trans-3,4-trans-3,3',4',7-tetrahydroxyflavan-4-yl>-3,3',4',5,7-pentahydroxyflavan(81600-43-3)
• EPA Substance Registry System: (2R,3S)-2,3-trans-6,8-bis-<(2R,3S,4R)-2,3-trans-3,4-trans-3,3',4',7-tetrahydroxyflavan-4-yl>-3,3',4',5,7-pentahydroxyflavan(81600-43-3)

Safety Data

• Hazardous Substances Data: 81600-43-3(Hazardous Substances Data)

Upstream product

• 104079-72-3 6-iodo-(+)-catechin 
• 69127-11-3 (2R,3S,4R)-2,3-trans-3,4-cis-3,3',4',7-tetrahydroxy-4-<(2R,3S)-2,3-trans-3,3',4',5,7-pentahydroxyflavan-8-yl>flavan 
• 967-27-1 (+)-mollisacacidin 
• 154-23-4 catechin 

Relevant articles and documents

Synthesis of Condensed Tannins. Part 14. Biflavanoid Profisetinidins as Synthons. The Acid-Induced 'Phlobaphene'Reaction

Free phenolic - and -2,3-trans-(-)-fisetinidol-(+)-catechin diastereoisomers of both 3,4-trans and 3,4-cis configuration, which serve as synthons for higher oligomers, are available in improved yields from direct condensation, and also via novel 6-iodo-(+)-catechin as an intermediate substrate.Acid-induced transformations of the predominant -all-trans isomer, illustrative of the well-known 'phlobaphene reaction' of condensed tannins, is shown to include ring-isomerization and fission of the inter-flavanoid bond, followed in the latter instance by the alternatives of anthocyanidin formation, positional rearrangement and self-condensation.