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520-33-2

520-33-2 Structure

520-33-2 Structure
IdentificationMore
[Name]

HESPERETIN
[CAS]

520-33-2
[Synonyms]

2,3-DIHYDRO-5,7-DIHYDROXY-2S-(3-HYDROXY-4-METHOXPHENYL)-4H-1-BENZOPYRAN-4-ONE
(+/-)-3',5,7-TRIHYDROXY-4'-METHOXYFLAVANONE
3',5,7-TRIHYDROXY-4'-METHOXYFLAVANONE
3',5,7-TRIHYDROXY-4-METHOXYFLAVANONE
4'-METHOXY-3',5,7-TRIHYDROXYFLAVANONE
5,7,3'-TRIHYDROXY-4'-METHOXYFLAVANONE
(+/-)-HESPERETIN
HESPERETIN
HESPERETINE
(S)-2,3-dihydro-5,7-dihydroxy-2-(3-hydroxy-4-methoxyphenyl)-4-benzopyrone
HESPERETIN 97%
5,7-DIHYDROXY-2-(3-HYDROXY-4-METHOXY-PHENYL)-CHROMAN-4-ONE
4H-1-Benzopyran-4-one, 2,3-dihydro-5,7-dihydroxy-2-(3-hydroxy-4-methoxyphenyl)-, (2S)-
(2S)-5,7-dihydroxy-2-(3-hydroxy-4-methoxy-phenyl)chroman-4-one
HESPERETIN(P)
HESPERETIN hplc
HESPERETIN WITH HPLC
(2S)-2-(3-Hydroxy-4-methoxyphenyl)-5,7-dihydroxy-2,3-dihydro-4H-1-benzopyran-4-one
(2S)-2-(3-Hydroxy-4-methoxyphenyl)-5,7-dihydroxy-2H-1-benzopyran-4(3H)-one
(S)-3',5,7-Trihydroxy-4'-methoxyflavanone
[EINECS(EC#)]

208-290-2
[Molecular Formula]

C16H14O6
[MDL Number]

MFCD00075646
[Molecular Weight]

302.28
[MOL File]

520-33-2.mol
Chemical PropertiesBack Directory
[Appearance]

Beige to Light Brown Crystalline Solid
[Melting point ]

230-232°C
[Boiling point ]

363.32°C (rough estimate)
[density ]

1.2514 (rough estimate)
[refractive index ]

-4 ° (C=1.8, EtOH)
[storage temp. ]

2-8°C
[solubility ]

DMSO (Slightly), Methanol (Slightly)
[form ]

Solid
[pka]

7.49±0.40(Predicted)
[color ]

White to Pale Yellow
[Water Solubility ]

Soluble in water (partly), dilute alkalis, and ethanol (50 mg/ml).
[Usage]

The aglucon of hesperidin
[Merck ]

14,4670
[BRN ]

309850
[Cosmetics Ingredients Functions]

ANTIOXIDANT
SKIN CONDITIONING
[InChIKey]

AIONOLUJZLIMTK-AWEZNQCLSA-N
[LogP]

2.90
[CAS DataBase Reference]

520-33-2(CAS DataBase Reference)
Safety DataBack Directory
[Symbol(GHS) ]

Exclamation Mark (GHS07)
GHS07
[Signal word ]

Warning
[Hazard statements ]

H315-H319-H335
[Precautionary statements ]

P261-P280a-P304+P340-P305+P351+P338-P405-P501a-P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313
[Hazard Codes ]

Xi
[Risk Statements ]

R36/37/38:Irritating to eyes, respiratory system and skin .
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S27:Take off immediately all contaminated clothing .
[WGK Germany ]

3
[HS Code ]

29329990
Raw materials And Preparation ProductsBack Directory
[Raw materials]

4-Methylumbelliferone-->Hesperidin-->Sulfuric acid-->Methanol
[Preparation Products]

beta-Phenylpropiophenone-->Neosperidin dihydrochalcone-->rac-Hesperetin 3’,7-Diacetate
Hazard InformationBack Directory
[Description]

Hesperetin is a flavonoid that has been found in citrus fruits and has diverse biological activities. It reduces ApoB protein levels, ACAT2 expression, and LDL degradation in HepG2 cells when used at a concentrations ranging from 10 to 200 μM. Hesperetin inhibits IgG-induced β-hexosaminidase release from RBL-2H3 cells (IC50 = 0.099 mg/ml). It inhibits LPS-induced nitric oxide (NO) production and reduces levels of inducible nitric oxide synthase (iNOS), IL-6, and IL-1β in BV-2 microglial cells. Hesperetin (5 mg/kg) inhibits passive cutaneous anaphylaxis in mice. It reduces body weight loss, colon shortening, and ulcer severity in a mouse model of TNBS-induced ulcerative colitis. Hesperetin reduces cortical and hippocampal neuronal apoptosis and increases time spent in the target quadrant in the Morris water maze in a mouse model of LPS-induced neuronal inflammation.
[Chemical Properties]

Beige to Light Brown Crystalline Solid
[Uses]

antiallergic
[Uses]

The aglucon of Hesperidin (H281185), a flavanone found in citrus fruits.
[Definition]

ChEBI: A trihydroxyflavanone having the three hydroxy gropus located at the 3'-, 5- and 7-positions and an additional methoxy substituent at the 4'-position.
[Synthesis]

Hesperidin

520-26-3

Hesperetin

520-33-2

Generic method: compound 2 was synthesized by the method reported in the literature. The raw material (S)-5-hydroxy-2-(3-hydroxy-4-methoxyphenyl)-7-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-((((2R,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)methyl)tetrahydro-2H-pyran-2-yl)oxy )benzodihydropyran-4-one (3.5 g, 5.7 mmol) was mixed with 10 mL of concentrated sulfuric acid in 280 mL of anhydrous methanol and the reaction was stirred at 60 °C for 7.5 hours. Upon completion of the reaction, 1.2 L of ethyl acetate was added to the reaction mixture and extracted at 20 °C. Subsequently, the organic phase was washed with 420 mL of water and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure to give a light yellow powdery crude product. The crude product was dissolved in 70 mL of acetone and then slowly added dropwise (over 60 minutes) to a pre-stirred 700 mL solution consisting of water and acetic acid mixed at 150:1 by volume, maintaining the temperature at 95°C. After dropwise addition, the mixed slurry was cooled to 45°C, the product was collected by filtration and dried under vacuum.

[Purification Methods]

Crystallise it from EtOAc or ethanol. The natural S(-) form crystallises from EtOH and has m 216-218o and [] D -37.6o (c 2, EtOH). Note that C2 is chiral. [Beilstein 18 II 204, 18 III/IV 3215, 18/5 V 214.]
[References]

[1] Journal of Medicinal Chemistry, 2011, vol. 54, # 1, p. 95 - 106
[2] Medicinal Chemistry Research, 2011, vol. 20, # 8, p. 1200 - 1205
[3] Bioorganic and Medicinal Chemistry Letters, 2012, vol. 22, # 23, p. 7194 - 7197
[4] Patent: CN105693682, 2016, A. Location in patent: Paragraph 0024; 0025
[5] Journal of Chemical Research, 2014, vol. 38, # 7, p. 396 - 398
Spectrum DetailBack Directory
[Spectrum Detail]

HESPERETIN(520-33-2)MS
HESPERETIN(520-33-2)1HNMR
HESPERETIN(520-33-2)13CNMR
HESPERETIN(520-33-2)IR1
HESPERETIN(520-33-2)IR2
Well-known Reagent Company Product InformationBack Directory
[Alfa Aesar]

3',5,7-Trihydroxy-4'-methoxyflavanone, 97%(520-33-2)
[TCI AMERICA]

Hesperetin,>97.0%(LC)(T)(520-33-2)
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