55969-56-7

Basic information

• Product Name: Cryptochrysin
• Synonyms: Cryptochrysin
• CAS NO: 55969-56-7
• Molecular Formula: C₁₆H₁₂O₄
• Molecular Weight: 268.26408
• Mol File: 55969-56-7.mol
• Article Data: 2

Chemical Properties

• Appearance: /
• CAS DataBase Reference: Cryptochrysin(CAS DataBase Reference)
• NIST Chemistry Reference: Cryptochrysin(55969-56-7)
• EPA Substance Registry System: Cryptochrysin(55969-56-7)

Safety Data

• Hazardous Substances Data: 55969-56-7(Hazardous Substances Data)

Upstream product

• 14004-47-8 5,7-dimethoxy-8-methyl-2-phenylchromen-4-one 
• 2657-28-5 2,4,6-trihydroxy-3-methyl-acetophenon 
• 93-97-0 benzoic acid anhydride 
• 26505-96-4 5,7-di-O-methyl-8-iodochrysin 
• 21392-57-4 Dimethyl-chrysin 
• 1775-97-9 flavokawain B 
• 90-24-4 2-hydroxy-4,6-dimethoxyacetophenone 
• 480-66-0 2,4,6-trihydroxyacetophenone 
• 109845-46-7 1-(2-hydroxy-4,6-dimethoxy-3-methyl-phenyl)-3-phenyl-propane-1,3-dione 
• 14004-48-9 5-hydroxy-7-methoxy-8-methylflavone 
• 88-03-9 2,4,6-trihydroxytoluene 
• 55969-57-8 5-hydroxy-7-methoxy-6-methyl-2-phenyl-chromen-4-one 
• 10034-85-2 hydrogen iodide 
• 108-24-7 acetic anhydride 

Downstream Products

• 115272-41-8 6-[(2,4-dinitro-phenylhydrazono)-methyl]-5,7-dihydroxy-8-methyl-2-phenyl-chromen-4-one 
• 59677-79-1 5,7-diacetoxy-6-diacetoxymethyl-8-methyl-2-phenyl-chromen-4-one 
• 102706-32-1 5,6,7-triacetoxy-8-methyl-2-phenyl-chromen-4-one 
• 55969-57-8 5-hydroxy-7-methoxy-6-methyl-2-phenyl-chromen-4-one 
• 109309-40-2 5-hydroxy-6,7-dimethoxy-8-methyl-2-phenyl-chromen-4-one 
• 14004-47-8 5,7-dimethoxy-8-methyl-2-phenylchromen-4-one 
• 109251-29-8 Strobochrysin dimethylether 
• 374705-41-6 5,6,7-trihydroxy-8-methylflavone 
• 529-52-2 6-Methylchrysine 
• 14004-48-9 5-hydroxy-7-methoxy-8-methylflavone 
• 59677-74-6 unonal 

Relevant articles and documents

Unveiling the 6,8-Rearrangement in 8-Phenyl-5,7-dihydroxyflavylium and 8-Methyl-5,7-dihydroxyflavylium through Host–Guest Complexation

8-Phenyl-5,7-dihydroxyflavylium and 8-methyl-5,7-dihydroxyflavylium were synthesized to observe the 6,8-rearrangement. 8-Phenyl and 8-methyl residues were introduced by Suzuki–Miyaura reaction of 8-iodochrysin, then reduced by LiAlH4 to give the corresponding 3-deoxyanthocyanidins. At pH 1.0 the stable form is the 8-substituted flavylium cation in both compounds. At higher pH values the quinoidal bases are the stable species and some evidence for the 6,8-rearrangement was obtained, but the respective spectral variations are very small. This was overcome by using a modified cyclodextrin (captisol), which favors the formation of the trans-chalcone at the expense of the quinoidal bases. The trans-chalcone was isolated and dissolved in CD3OD/DCl (pD + m/z 253). The 6-isomer slowly reverts to the most stable 8-isomer. The 6,8-rearrangement was also observed after irradiation of the trans-chalcone (in the presence of captisol) at pH 5. Acidification of this photostationary state gave a mixture of both flavylium cations. The UV/Vis absorption of the flavylium cation (6-isomer) was blueshifted in comparison to the 8-isomer.