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Vat and sulfur dyes

Flavanthrone

Also known as Vat Yellow 1, Flavanthrene, Benzo[h]benz[5,6]acridino[2,1,9,8-klmna]acridine-8,16-dione

CAS 475-71-8Formula C28H12N2O2Molar mass 408.42 g/molEC 207-498-0
GHS signal word: Warning. Pictograms: Harmful or irritant 2 suppliers listed
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Flavanthrone chemical structure, C28H12N2O2, CAS 475-71-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
475-71-8
Formula
C28H12N2O2
Molar mass
408.42 g/mol
EC number
207-498-0
HS code
320415
Category
Vat and sulfur dyes

What is Flavanthrone?

Plain description, key identifiers and synonyms

Flavanthrone is a chemical substance with the molecular formula C28H12N2O2 and a molar mass of 408.42 g/mol. Its CAS registry number is 475-71-8. The IUPAC name is 16,30-diazaoctacyclo[15.11.1.14,28.02,15.03,12.05,10.018,23.025,29]triaconta-1(28),2(15),3(12),4(30),5,7,9,13,16,18,20,22,25(29),26-tetradecaene-11,24-dione.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
16,30-diazaoctacyclo[15.11.1.14,28.02,15.03,12.05,10.018,23.025,29]triaconta-1(28),2(15),3(12),4(30),5,7,9,13,16,18,20,22,25(29),26-tetradecaene-11,24-dione
CAS number
475-71-8 CAS number cross-checked
EC number
207-498-0
Molecular formula
C28H12N2O2
UNII
5FA52JAB7C
InChIKey
KJPJZBYFYBYKPK-UHFFFAOYSA-N
InChI
InChI=1S/C28H12N2O2/c31-27-15-7-3-1-5-13(15)25-21-17(27)9-12-20-23(21)24-19(29-25)11-10-18-22(24)26(30-20)14-6-2-4-8-16(14)28(18)32/h1-12H
SMILES (canonical and isomeric)
C1=CC=C2C(=C1)C3=NC4=C5C6=C(C=C4)C(=O)C7=CC=CC=C7C6=NC8=C5C3=C(C2=O)C=C8

Synonyms

  • Vat Yellow 1
  • Flavanthrene
  • Benzo[h]benz[5,6]acridino[2,1,9,8-klmna]acridine-8,16-dione
  • Caledon Paper Yellow GN
  • C. I. Vat Yellow 1
  • Benzo(h)benz(5,6)acridino(2,1,9,8-klmna)acridine-8,16-dione
  • Benzo[h]benzo[5,6]acridino[2,1,9,8-klmna]acridine-8,16-dione
  • Indofast Yellow
  • Sandothrene NGN
  • Ponsol Yellow G
  • Tinon Yellow GN
  • Ponsol Yellow GD
  • Vat Yellow I
  • C.I. Vat Yellow 1
  • Caledon Yellow GN
  • Indanthren Yellow G
  • Mikethrene Yellow G
  • Tyrian Yellow I-G
  • Cibanone Yellow FGN
  • Indanthrene Yellow G
  • Microlith Gold G-T
  • Palanthrene Yellow G
  • Solanthrene Yellow J
  • Romantrene Yellow FG
  • Indo Yellow Y-35
Show all 38 synonyms
  • Carbanthrene Yellow G
  • Indofast Yellow Toner
  • Sandothrene Yellow NG
  • Indanthren Yellow GLP
  • Paradone Yellow G New
  • Carbanthrene Printing Yellow G
  • Paliogen Yellow 1870
  • Chromophthal Yellow-A2R
  • Monolite Fast Yellow FR
  • Monolite Fast Yellow FRS
  • Caledon Printing Yellow GN
  • Cromophtal Yellow A2R
  • C.I. 70600

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
408.42 g/molcalc.
Exact mass
408.0899 Dacalc.
LogP (octanol/water)
5.58calc.
Topological polar surface area
59.92 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
0calc.
Heavy atoms
32calc.
Rings
8calc.
Aromatic rings
8calc.
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=c1c2ccccc2c2nc3ccc4c(=O)c5ccccc5c5nc6ccc1c2c6c3c45

O=c1c2ccccc2c2nc3ccc4c(=O)c5ccccc5c5nc6ccc1c2c6c3c45

8 rings, 32 atoms. This chemical is the scaffold itself.

No other chemical in our database has this scaffold.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H319Causes serious eye irritation.
Precautionary statements (4)
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P337 + P317If eye irritation persists: Get medical help.

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

Full safety data and first aid

Flavanthrone suppliers

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All 2 suppliers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

2 suppliers in 2 countries

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Flavanthrone 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.

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Uses and applications

What the substance is used for, by industry and function

Industries and functions

Functional uses

  • Pigment

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 Flavanthrone 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 Flavanthrone is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Flavanthrone?

Flavanthrone is a chemical substance with the molecular formula C28H12N2O2 and a molar mass of 408.42 g/mol. Its CAS registry number is 475-71-8.

What is the CAS number of Flavanthrone?

The CAS registry number of Flavanthrone is 475-71-8.

What is the molecular formula and weight of Flavanthrone?

The molecular formula of Flavanthrone is C28H12N2O2 and its molar mass is 408.42 g/mol.

What is Flavanthrone used for?

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

Is Flavanthrone hazardous?

Flavanthrone carries the GHS signal word "Warning". Main hazards: causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Flavanthrone?

Flavanthrone 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 Flavanthrone?

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

What is the price of Flavanthrone?

Suppliers quote Flavanthrone 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 Flavanthrone

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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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