Detail of "491-80-5"

MSDS Download
CAS Number:
491-80-5
Name:
4H-1-Benzopyran-4-one,5,7-dihydroxy-3-(4-methoxyphenyl)-
Superlist Name:
5,7-Dihydrox -4'-methoxyisoflavone
Molecular Structure:
Formula:
C₁₆H₁₂O₅
Molecular Weight:
284.26
Synonyms:
Biochanin A(6CI);Isoflavone, 5,7-dihydroxy-4'-methoxy- (8CI);4'-Methylgenistein;Biochanin;Genistein 4-methyl ether;Genistein 4'-methyl ether;NSC 123538;Olmelin;
EINECS:
207-744-7
Density:
1.42 g/cm³
Melting Point:
210-213 °C(lit.)
Boiling Point:
518.6 °C at 760 mmHg
Flash Point:
198.2 °C
Solubility:
acetone: 10 mg/mL, clear, brown
Appearance:
Off-white solid
Safety:
22-24/25 Details

Liquid chromatographic determination of the plant estrogens coumestrol and isoflavones in animal feed: Liquid chromatographic determination of the plant estrogens coumestrol and isoflavones in animal feed. Pettersson, Hans; Kiessling, Karl Heinz (Dep. Anim. Nutr., Swed. Univ. Agric. Sci., Uppsala S-750 07, Swed.). J. Assoc. Off. Anal. Chem., 67(3), 503-6 (English) 1984. CODEN: JANCA2. ISSN: 0004-5756. DOCUMENT TYPE: Journal CA Section: 17 (Food and Feed Chemistry) Section cross-reference(s): 4 A simplified procedure is described for the cleanup and detn. of the 5 main plant estrogens in animal feed: coumestrol [479-13-0], genistein [446-72-0], biochanin A [491-80-5], daidzein [486-66-8], and formononetin [485-72-3]. The estrogens are extd. with EtOH and purified on a Sep-Pak C18 cartridge. All 5 plant estrogens are sepd. in an isocratic liq. chromatog. system and quantitated by UV and fluorescence responses. The method is sensitive to about 2.5 ppm coumestrol and 10 ppm of the isoflavones.

Urinary sediments in sheep feeding on estrogenic clover: Urinary sediments in sheep feeding on estrogenic clover.Some chemicals with cas registry numbers like 1143-70-0 and 482-89-3 are also used. V. Seasonal changes in the excretion of components of calculi and sediments. Nottle, M. C. (Anim. Health Lab., West. Aust. Dep. Agric., South Perth, Aust.). Aust. J. Agric. Res., 27(6), 867-71 (English) 1976. CODEN: AJAEA9. DOCUMENT TYPE: Journal CA Section: 4 (Toxicology) Components of urinary calculi and sediments were analyzed from early July to late October in 6 sheep grazing on pasture with estrogenic Trifolium subterraneum. Levels of these components were lowest in July-August and reached their peaks during the later months. The detected ranges for formononetin [485-72-3] were 0.3-2.7 mg %, for equol [531-95-3] 4-108 mg %, 4-O-methylequol [61514-94-1] traces to 39 mg %. Also detected throughout the exptl. period were urolithin A [1143-70-0], urolithin B [1139-83-9], indirubin [479-41-4], and indigotin [482-89-3]. Biochanin A [491-80-5] was detected only in September-October. .