CompoundList
Sign in
Vat and sulfur dyes

Isoviolanthrone

Also known as Isodibenzanthrone, Isothrene, Benzo[rst]phenanthro[10,1,2-cde]pentaphene-9,18-dione

CAS 128-64-3Formula C34H16O2Molar mass 456.50 g/molEC 204-901-1
Get quotes Safety data
Isoviolanthrone chemical structure, C34H16O2, CAS 128-64-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
128-64-3
Formula
C34H16O2
Molar mass
456.50 g/mol
EC number
204-901-1
HS code
320415
Category
Vat and sulfur dyes

What is Isoviolanthrone?

Plain description, key identifiers and synonyms

Isoviolanthrone is a chemical substance with the molecular formula C34H16O2 and a molar mass of 456.50 g/mol. Its CAS registry number is 128-64-3. The IUPAC name is nonacyclo[18.10.2.22,5.03,16.04,13.06,11.017,31.021,26.028,32]tetratriaconta-1(30),2,4,6,8,10,13,15,17(31),18,20(32),21,23,25,28,33-hexadecaene-12,27-dione.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
nonacyclo[18.10.2.22,5.03,16.04,13.06,11.017,31.021,26.028,32]tetratriaconta-1(30),2,4,6,8,10,13,15,17(31),18,20(32),21,23,25,28,33-hexadecaene-12,27-dione
CAS number
128-64-3 CAS number cross-checked
EC number
204-901-1
Molecular formula
C34H16O2
MDL number
MFCD00021274
InChIKey
BSIHWSXXPBAGTC-UHFFFAOYSA-N
InChI
InChI=1S/C34H16O2/c35-33-25-7-3-1-5-17(25)19-9-11-21-24-14-16-28-32-20(18-6-2-4-8-26(18)34(28)36)10-12-22(30(24)32)23-13-15-27(33)31(19)29(21)23/h1-16H
SMILES (canonical and isomeric)
C1=CC=C2C(=C1)C3=C4C(=CC=C5C4=C(C=C3)C6=CC=C7C8=C(C=CC5=C68)C9=CC=CC=C9C7=O)C2=O

Synonyms

  • Isodibenzanthrone
  • Isothrene
  • Benzo[rst]phenanthro[10,1,2-cde]pentaphene-9,18-dione
  • Isoviolanthrone A
  • Izodibenzantron
  • Benzadone Violet B
  • Romantrene Violet 2R
  • C.I. Vat Violet 10
  • Romantrene Brilliant Violet 4R
  • Paradone Violet B New
  • Paradone Brilliant Violet 2R
  • Carbanthrene Printing Violet 2R
  • Romantrene Brilliant Violet F2R
  • Romantrene Brilliant Violet F4R
  • C.I. 60000
  • Benzo(rst)phenanthro(10,1,2-cde)pentaphene-9,18-dione
  • Dinaphtho(1,2,3-cd:1',2',3'-lm)perylene-9,18-dione
  • Isoviolanthrone (8CI)
  • Dinaphtho(1,2,3-cd:1',2',3'-lm)perylene-9,18-dione (9CI)
  • Vat Violet 10
  • nonacyclo[18.10.2.22,5.03,16.04,13.06,11.017,31.021,26.028,32]tetratriaconta-1(30),2,4,6,8,10,13,15,17(31),18,20(32),21,23,25,28,33-hexadecaene-12,27-dione
  • vat violet 1 (c.i. 60010)
  • Benzorstphenanthro10,1,2-cdepentaphene-9,18-dione
  • Diisobenzanthrone
  • Alizanthrene violet
Show all 29 synonyms
  • para.Done Violet B New
  • Para.Done Brilliant Violet 2R
  • Dinaphtho[1,3-cd:1',2',3'-lm]perylene-9,18-dione
  • {Dinaphtho[1,2,3-cd:1',2',3'-lm]perylene-9,} 18-dione

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
456.50 g/molcalc.
Exact mass
456.115 Dacalc.
LogP (octanol/water)
8.16calc.
Topological polar surface area
34.14 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
36calc.
Rings
9calc.
Aromatic rings
7calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (1 violation)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=C1c2ccccc2-c2ccc3c4ccc5c6c(ccc(c7ccc1c2c73)c64)-c1ccccc1C5=O

O=C1c2ccccc2-c2ccc3c4ccc5c6c(ccc(c7ccc1c2c73)c64)-c1ccccc1C5=O

9 rings, 36 atoms. This chemical is the scaffold itself.

6 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.

Isoviolanthrone suppliers

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

No supplier listings yet

Post one free request and suppliers who make or trade Isoviolanthrone can send you quotes. Your contact details stay private until you accept a quote.

Request quotesSell this chemical

Isoviolanthrone price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

Get latest price

Uses and applications

What the substance is used for, by industry and function

Industries and functions

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 3204.15Indicative HS code

Vat dyes (including those usable in that state as pigments) and preparations based thereon

World exports in 2024
$435M
−7.3% vs 2023, imports $357M
2019 to 2024
Top exporters
  1. China60.2%
  2. Singapore10.7%
  3. India * partner reported8.7%
Top importers
  1. India * partner reported17.1%
  2. Turkey10.7%
  3. Singapore10.6%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Isoviolanthrone?

Isoviolanthrone is a chemical substance with the molecular formula C34H16O2 and a molar mass of 456.50 g/mol. Its CAS registry number is 128-64-3.

What is the CAS number of Isoviolanthrone?

The CAS registry number of Isoviolanthrone is 128-64-3.

What is the molecular formula and weight of Isoviolanthrone?

The molecular formula of Isoviolanthrone is C34H16O2 and its molar mass is 456.50 g/mol.

What is Isoviolanthrone used for?

Known uses and roles of Isoviolanthrone include textile dyes in textiles and leather.

Is Isoviolanthrone hazardous?

No GHS hazard classification for Isoviolanthrone 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 Isoviolanthrone?

Isoviolanthrone is usually classified under HS code 320415 (Vat dyes (including those usable in that state as pigments) and preparations based thereon). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Isoviolanthrone?

Post a free request on CompoundList and suppliers of Isoviolanthrone will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Isoviolanthrone?

Suppliers quote Isoviolanthrone 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

Practical guides that help when you source, ship or handle Isoviolanthrone

Get quotes for Isoviolanthrone

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Isoviolanthrone
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Isoviolanthrone with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/isoviolanthrone-128-64-3" title="Isoviolanthrone structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Vat and sulfur dyes or HS code 320415

Price on request
Free quotes, contact stays private
Get quotes