Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 1,3-Dihydroxy-7-methoxy-9H-xanthen-9-one
Price: Check
Purity: 95.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: isogentisin
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Shanghai Amole Biotechnology Co., Ltd.
China
Product Name: 1,3-Dihydroxy-7-methoxy-9H-xanthen-9-one
Price: ￥Inquiry/100mg ￥Inquiry/1g ￥Inquiry/250mg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Xiyao Wang
Email: 3623107365@qq.com

491-64-5

491-64-5 structure

491-64-5 structure

Name: 1,3-Dihydroxy-7-methoxy-9H-xanthen-9-one
Chemical Name: isogentisin
CAS Number: 491-64-5
Molecular Formula: C₁₄H₁₀O₅
Molecular Weight: 258.22600
Create Date: 2017-11-13 02:48:28
Modify Date: 2025-09-18 18:21:17

Name	isogentisin
Synonyms	1,3-dihydroxy-7-methoxyxanthen-9-one Xanthen-9-one,1,3-dihydroxy-7-methoxy 1,3-Dihydroxy-7-methoxyxanthon,Isogentisin 1,3-dihydroxy-7-methoxy-xanthen-9-one 1,3-dihydroxy-7-methoxyxanthone Isogentisin 1,3-Dihydroxy-7-methoxy-9H-xanthen-9-one 1,3-Dihydroxy-7-methoxyxanthon 1,3-Dihydroxy-7-methoxy-xanthen-9-on

Density	1.48g/cm3
Boiling Point	519.4ºC at 760 mmHg
Melting Point	241 °C
Molecular Formula	C₁₄H₁₀O₅
Molecular Weight	258.22600
Flash Point	205ºC
Exact Mass	258.05300
PSA	79.90000
LogP	2.36600
Vapour Pressure	2.09E-11mmHg at 25°C
Index of Refraction	1.68

CHEMICAL IDENTIFICATION

RTECS NUMBER :: ZD6034500

CHEMICAL NAME :: Xanthen-9-one, 1,3-dihydroxy-7-methoxy-

CAS REGISTRY NUMBER :: 491-64-5

BEILSTEIN REFERENCE NO. :: 0258402

LAST UPDATED :: 199612

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C14-H10-O5

MOLECULAR WEIGHT :: 258.24

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

MUTATION DATA

TYPE OF TEST :: Mutation in microorganisms

TEST SYSTEM :: Bacteria - Salmonella typhimurium

DOSE/DURATION :: 5 ug/plate

REFERENCE :: MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 116,103,1983

Hazard Codes	Xn
HS Code	2932999099

108-73-6 structure

108-73-6

2612-02-4 structure

2612-02-4

~%

491-64-5 structure

491-64-5

Literature: Grover et al. Journal of the Chemical Society, 1955 , p. 3982,3984

Precursor 2
108-73-6 2612-02-4
DownStream 3
13379-35-6 3722-54-1 529-49-7

HS Code	2932999099
Summary	2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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