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Heterocyclic building blocks

Alloxazine

Also known as Isoalloxazine, benzo[g]pteridine-2,4(1H,3H)-dione, Alloxazin

CAS 490-59-5Formula C10H6N4O2Molar mass 214.18 g/molEC 207-714-3
GHS signal word: Warning. Pictograms: Harmful or irritant 22 suppliers listed
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Alloxazine chemical structure, C10H6N4O2, CAS 490-59-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
490-59-5
Formula
C10H6N4O2
Molar mass
214.18 g/mol
EC number
207-714-3
HS code
293359
Category
Heterocyclic building blocks

What is Alloxazine?

Plain description, key identifiers and synonyms

Alloxazine is a benzo[g]pteridine-2,4-dione. It is a tautomer of an isoalloxazine.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1H-benzo[g]pteridine-2,4-dione
CAS number
490-59-5 CAS number cross-checked
EC number
207-714-3
Molecular formula
C10H6N4O2
UNII
880W3VF9YW
MDL number
MFCD00005020
InChIKey
HAUGRYOERYOXHX-UHFFFAOYSA-N
InChI
InChI=1S/C10H6N4O2/c15-9-7-8(13-10(16)14-9)12-6-4-2-1-3-5(6)11-7/h1-4H,(H2,12,13,14,15,16)
SMILES (canonical and isomeric)
C1=CC=C2C(=C1)N=C3C(=N2)NC(=O)NC3=O

Synonyms

  • Isoalloxazine
  • benzo[g]pteridine-2,4(1H,3H)-dione
  • Alloxazin
  • 1H-Benzo[g]pteridine-2,4-dione
  • Benzo(g)pteridine-2,4(1H,3H)-dione
  • benzo[g]pteridine-2,4(3H,10H)-dione
  • 1,2,3,4-Tetrahydrobenzopteridine-2,4-dione
  • Benzo[g]pteridine-2,4[1H,3H]-dione
  • Benzo(g)pteridine-2,4(3H,10H)-dione
  • 1H-Benzo(g)pteridine-2,4-dione
  • 1H,2H,3H,4H-benzo[g]pteridine-2,4-dione
  • 10H-benzo[g]pteridine-2,4-dione
  • Benzo[g]pteridine-2,3H)-dione
  • 1,3-dihydrobenzo[g]pteridine-2,4-dione
  • Alloxazine, 96%
  • Flavoquinone
  • Alloxazine, Isoalloxazine
  • 6,7-Benzolumazine
  • MixCom6_000433
  • 1,2,3,4-Tet
  • Sdccgsbi-0050146.p002
  • 2H,3H,4H,10H-benzo[g]pteridine-2,4-dione
  • 2,3,4,10-tetrahydro-benzo[g]pteridine-2,4-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
214.18 g/molcalc.
Exact mass
214.0491 Dacalc.
LogP (octanol/water)
0.16calc.
Topological polar surface area
91.5 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
0calc.
Heavy atoms
16calc.
Rings
3calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0calc.
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=c1nc2[nH]c3ccccc3nc-2c(=O)[nH]1

O=c1nc2[nH]c3ccccc3nc-2c(=O)[nH]1

3 rings, 16 atoms. This chemical is the scaffold itself.

245 other chemicals share 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

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

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

Alloxazine suppliers

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

All 22 suppliers
22 of 22 offers

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

22 suppliers in 7 countries

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Alloxazine 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

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 Alloxazine is traded under.

HS 2933.59Indicative HS code

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring, other

World exports in 2024
$18.4B
+10.5% vs 2023, imports $24.8B
2019 to 2024
Top exporters
  1. Ireland43.6%
  2. Switzerland * partner reported26.3%
  3. China7.9%
Top importers
  1. Slovenia30.3%
  2. United States30.1%
  3. Germany15.3%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Alloxazine?

Alloxazine is a benzo[g]pteridine-2,4-dione. It is a tautomer of an isoalloxazine.

What is the CAS number of Alloxazine?

The CAS registry number of Alloxazine is 490-59-5.

What is the molecular formula and weight of Alloxazine?

The molecular formula of Alloxazine is C10H6N4O2 and its molar mass is 214.18 g/mol.

What is Alloxazine used for?

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

Is Alloxazine hazardous?

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

What is the HS code of Alloxazine?

Alloxazine is usually classified under HS code 293359 (Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Alloxazine?

CompoundList lists 22 suppliers of Alloxazine in United States, China, Hong Kong, Australia and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Alloxazine?

Suppliers quote Alloxazine 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 Alloxazine

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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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