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Screening compounds

Obtusin

Also known as 1,7-dihydroxy-2,3,8-trimethoxy-6-methylanthracene-9,10-dione, 9,10-Anthracenedione, 1,7-dihydroxy-2,3,8-trimethoxy-6-methyl-, (2R,3'S,3aR,5R,5'S,6aR)-3'-bromo-5'-((1S)-1-bromopropyl)-2-(1-bromoprop-2-ynyl)spiro(3,3a,6,6a-tetrahydro-2H-furo(3,2-b)furan-5,2'-oxolane)

CAS 70588-05-5Formula C18H16O7Molar mass 344.32 g/mol
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Obtusin chemical structure, C18H16O7, CAS 70588-05-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
70588-05-5
Formula
C18H16O7
Molar mass
344.32 g/mol
HS code
291469
Category
Screening compounds

What is Obtusin?

Plain description, key identifiers and synonyms

Obtusin is a dihydroxyanthraquinone.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,7-dihydroxy-2,3,8-trimethoxy-6-methylanthracene-9,10-dione
CAS number
70588-05-5 CAS number cross-checked
Molecular formula
C18H16O7
MDL number
MFCD13195592
InChIKey
CFLNHFUPWNRWJA-UHFFFAOYSA-N
InChI
InChI=1S/C18H16O7/c1-7-5-8-12(18(25-4)13(7)19)15(21)11-9(14(8)20)6-10(23-2)17(24-3)16(11)22/h5-6,19,22H,1-4H3
SMILES (canonical and isomeric)
CC1=CC2=C(C(=C1O)OC)C(=O)C3=C(C(=C(C=C3C2=O)OC)OC)O

Synonyms

  • 1,7-dihydroxy-2,3,8-trimethoxy-6-methylanthracene-9,10-dione
  • 9,10-Anthracenedione, 1,7-dihydroxy-2,3,8-trimethoxy-6-methyl-
  • (2R,3'S,3aR,5R,5'S,6aR)-3'-bromo-5'-((1S)-1-bromopropyl)-2-(1-bromoprop-2-ynyl)spiro(3,3a,6,6a-tetrahydro-2H-furo(3,2-b)furan-5,2'-oxolane)
  • (2R,3'S,3aR,5R,6aR)-3'-bromo-5'-((1R)-1-bromopropyl)-2-((1R)-1-bromoprop-2-ynyl)spiro(3,3a,6,6a-tetrahydro-2H-furo(3,2-b)furan-5,2'-oxolane)
  • 1,7-dihydroxy-2,3,8-trimethoxy-6-methyl-anthracene-9,10-dione
  • 1,7-Dihydroxy-2,3,8-trimethoxy-6-methyl-9,10-dihydroanthracene-9,10-dione
  • 1,7-dihydroxy-2,3,8-trimethoxy-6-methylanthraquinone
  • 1,7-Dihydroxy-2,3,8-trimethoxy-6-methylanthracene-9,10-dion
  • 1,7-Dihydroxy-2,3,8-trimethoxy-6-methylanthracene-9,10-dioneObtusin
  • 1,7-Dihydroxy-2,3,8-trimethoxy-6-methylanthracene-9,10-dione pound>>Obtusin

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
344.32 g/molcalc.
Exact mass
344.0896 Dacalc.
LogP (octanol/water)
2.21calc.
Topological polar surface area
102.3 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
7calc.
Rotatable bonds
3calc.
Heavy atoms
25calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.22calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C1c2ccccc2C(=O)c2ccccc21

O=C1c2ccccc2C(=O)c2ccccc21

3 rings, 16 atoms, the Anthraquinone ring system.

2,059 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Obtusin suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 2 suppliers

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Where suppliers are based

2 suppliers in 1 country

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Obtusin price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Obtusin is traded under.

HS 2914.69Indicative HS code

Quinones, other

World exports in 2024
$162M
−10.1% vs 2023, imports $157M
2019 to 2024
Top exporters
  1. China32.8%
  2. Netherlands29.3%
  3. Japan13.8%
Top importers
  1. United States23.0%
  2. India * partner reported16.1%
  3. Thailand7.9%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Obtusin is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Obtusin, based on the data on this page

What is Obtusin?

Obtusin is a dihydroxyanthraquinone.

What is the CAS number of Obtusin?

The CAS registry number of Obtusin is 70588-05-5.

What is the molecular formula and weight of Obtusin?

The molecular formula of Obtusin is C18H16O7 and its molar mass is 344.32 g/mol.

What is Obtusin used for?

Known uses and roles of Obtusin include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Obtusin hazardous?

No GHS hazard classification for Obtusin is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Obtusin?

Obtusin is usually classified under HS code 291469 (Quinones, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Obtusin?

CompoundList lists 2 suppliers of Obtusin in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Obtusin?

Suppliers quote Obtusin on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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