(2R,3S)-2-(3,4-Dihydroxyphenyl)chroman-3,5,7-triol CAS No.154-23-4 / Cat No.EBD19553
2-(3,4-dihydroxyphenyl)chromane-3,5,7-triol (2R,3S)
3,3,4,5,7-Flavanpentol
(+)-Catechins
(2R,3S)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,5,7-triol
(2R,3S)-2-(3,4-Dihydroxyphenyl)chroman-3,5,7-triol
(+)-catechin
catechin
catechin, (+)-
d-catechin
(+)-3,3'4',5,7-flavanepentol
3,3',4',5,7-pentahydroxyflavane
[2r,3s]-2-[3,4-dihydroxyphenyl]-3,4-dihydro-1[2h]-benzopyran-3,4,7-triol
2-(3,4-dihydroxyphenyl)-3,4-dihydro-(2r-trans)-2h-1-benzopyran-7-triol
cianidanol
2-(3,4-dihydroxyphenyl)chromane-3,5,7-triol (2R,3S)
3,3,4,5,7-Flavanpentol
(+)-Catechins
(2R,3S)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-2H-chromene-3,5,7-triol
Properties
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Appearance:
Tan solid
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Density:
1.593 g/cm3
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Melting point:
175-177 °C (anhydrous)(lit.)
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Boiling point:
630.4 °C at 760 mmHg
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Flashing point:
335 °C
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Storage temperature:
2-8°C
Safety Information
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Signal words:
None
NMR Spectrum
Prediction： 1HNMR: 6 ppm. (DMSO-d6) 9.150 (1H, s, OH), 8.911 (1H,s, OH), 8.835 (1H, s, OH), 8.788 (1H, s, OH), 6.706 (1H, d, J=2 Hz, H2), 6.670 (1H, d, J=8.0 Hz, H-6), 6.578 (1H, dd, J=2, 8 Hz, H-5), 5.873 (1H, d, J=2 Hz, H8), 5.670 (1H, d, J=2 Hz, H6), 4.839 (1H, d, J=4 Hz, OH), 4.461 (1H, d, J=7.3 Hz, H2), 3.798 (1H, m, H3), 2.625 (1H, m, H4b), 2.490 (1H, m, H4a)
1H NMR
13C NMR
