3-O-Methylquercetin

Modify Date: 2025-08-25 00:38:19

3-O-Methylquercetin structure	Common Name	3-O-Methylquercetin
	CAS Number	1486-70-0	Molecular Weight	316.262
	Density	1.7±0.1 g/cm3	Boiling Point	643.0±55.0 °C at 760 mmHg
	Molecular Formula	C₁₆H₁₂O₇	Melting Point	N/A
	MSDS	USA	Flash Point	244.7±25.0 °C
	Symbol	GHS06	Signal Word	Danger

Use of 3-O-Methylquercetin

3-O-Methylquercetin (3-MQ), a main constituent of Rhamnus nakaharai, inhibits total cAMP and cGMP-phosphodiesterase (PDE) of guinea pig trachealis. 3-O-Methylquercetin (3-MQ) exhibits IC50 values of 31.9 μM， 86.9 μM， 18.6 μM and 1.6 μM for PDE1, PDE5, PDE2 and PDE4, respectively[1].

Name	3',4',5,7-tetrahydroxy-3-methoxyflavone
Synonym	More Synonyms

Description	3-O-Methylquercetin (3-MQ), a main constituent of Rhamnus nakaharai, inhibits total cAMP and cGMP-phosphodiesterase (PDE) of guinea pig trachealis. 3-O-Methylquercetin (3-MQ) exhibits IC50 values of 31.9 μM， 86.9 μM， 18.6 μM and 1.6 μM for PDE1, PDE5, PDE2 and PDE4, respectively[1].
Related Catalog	Signaling Pathways >> Metabolic Enzyme/Protease >> Phosphodiesterase (PDE) Research Areas >> Inflammation/Immunology
References	[1]. Wun-Chang Ko, et al. 3-O-methylquercetin More Selectively Inhibits Phosphodiesterase Subtype 3. Planta Med. 2003 Apr;69(4):310-5.

Density	1.7±0.1 g/cm3
Boiling Point	643.0±55.0 °C at 760 mmHg
Molecular Formula	C₁₆H₁₂O₇
Molecular Weight	316.262
Flash Point	244.7±25.0 °C
Exact Mass	316.058289
PSA	120.36000
LogP	2.02
Vapour Pressure	0.0±2.0 mmHg at 25°C
Index of Refraction	1.762

3-O-Methylquercetin MSDS(Chinese)

Symbol	GHS06
Signal Word	Danger
Hazard Statements	H301
Precautionary Statements	P301 + P310
Hazard Codes	T
Risk Phrases	25
Safety Phrases	45
RIDADR	UN 2811 6.1 / PGIII
HS Code	2914509090

Precursor 8
CAS#:1486-57-3 2-(3,4-bis(benz... CAS#:55317-02-7 2-methoxy-1-(2,... CAS#:108-73-6 Phloroglucinol CAS#:5447-02-9 3,4-dibenzyloxy...
CAS#:1570-05-4 3,4-BIS(BENZYLO... CAS#:1486-54-0 3,4-bis(phenylm... CAS#:183067-65-4 2-(3,4-bis(benz... CAS#:153-18-4 Rutin
DownStream 4
CAS#:1486-69-7 3-O-Methylquerc... CAS#:33429-83-3 Quercetin 3,4'-... CAS#:2068-02-2 3,7-Di-O-methyl... CAS#:572-32-7 Ayanin

HS Code	2914509090
Summary	HS:2914509090 other ketones with other oxygen function VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%

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Isolation of flavonoids and a chalcone from Helichrysum odoratissimum and synthesis of helichrysetin.

J. Nat. Prod. 52(3) , 629-33, (1989)

3,5-Dihydroxy-6,7,8-trimethoxyflavone, 3-O-methylquercetin, and helichrysetin were isolated from the flowers of the Rwandese medicinal plant, Helichrysum odoratissimum. Because of inconsistencies of t...

2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-methoxychromen-4-one

2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-3-methoxy-4H-chromen-4-one

3-methoxy-5,7,3',4'-tetrahydroxy-flavone

2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-3-methoxy-4H-1-benzopyran-4-one

3-O-Methylquercetin

4H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-methoxy-

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Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 3-O-Methylquercetin
Price: Check
Purity: 98.0%
Delivery: 10 Day
Contact: Yang
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Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: 3-O-Methylquercetin
Price: ￥3680.0/5mg
Purity: 98.0%
Delivery: 3 Day
Contact: Liu jia
Email: 2130147988@qq.com

DC Chemicals Limited
China
Product Name: 3-O-Methylquercetin
Price: $Inquiry/250mg $Inquiry/100mg $Inquiry/1g
Purity: 98.0%
Delivery: 3 Day
Contact: Tony Cao
Email: sales@dcchemicals.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 4H-1-Benzopyran-4-one,2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-methoxy-
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Delivery: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

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3-O-Methylquercetin

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