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Heterocyclic building blocks

Pteridine

Also known as Azinepurine, 1,3,5,8-Tetraazanaphthalene, Pyrimido(4,5-b)pyrazine

CAS 91-18-9Formula C6H4N4Molar mass 132.13 g/mol
7 suppliers listed
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Pteridine chemical structure, C6H4N4, CAS 91-18-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
91-18-9
Formula
C6H4N4
Molar mass
132.13 g/mol
HS code
293359
Category
Heterocyclic building blocks

What is Pteridine?

Plain description, key identifiers and synonyms

Pteridine is a member of pteridines, a mancude organic heterobicyclic parent, an azaarene and an ortho-fused heteroarene.

Pteridine is an aromatic compound made of fused pyrimidine and pyrazine rings.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
pteridine
CAS number
91-18-9 CAS number cross-checked
Molecular formula
C6H4N4
UNII
6EZF26XQ81
InChIKey
CPNGPNLZQNNVQM-UHFFFAOYSA-N
InChI
InChI=1S/C6H4N4/c1-2-9-6-5(8-1)3-7-4-10-6/h1-4H
SMILES (canonical and isomeric)
C1=CN=C2C(=N1)C=NC=N2

Synonyms

  • Azinepurine
  • 1,3,5,8-Tetraazanaphthalene
  • Pyrimido(4,5-b)pyrazine
  • Pyrazino(2,3-d)pyrimidine
  • Pyrazino[2,3-d]pyrimidine
  • Pyrimido[4,5-b]pyrazine
  • Pyrazinopyrimidine
  • Pteridines
  • Pteridine (6CI,7CI,8CI,9CI)
  • Pteridene
  • pteridine-ring
  • 1,5,8-Tetraazanaphthalene

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
132.13 g/molcalc.
Exact mass
132.0436 Dacalc.
LogP (octanol/water)
0.42calc.
Topological polar surface area
51.56 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
0calc.
Heavy atoms
10calc.
Rings
2calc.
Aromatic rings
2calc.
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, c1cnc2ncncc2n1

c1cnc2ncncc2n1

2 rings, 10 atoms. This chemical is the scaffold itself.

176 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.

Pteridine suppliers

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

All 7 suppliers
7 of 7 offers
  • Dic Corporation
    Japan, Chuo-Ku ManufacturerUnclaimed profile
    PteridineGrade, purity and minimum order on request
    Price on request
    View
  • Anc Chemicals Company Limited
    Thailand, Pathum Wan ManufacturerUnclaimed profile
    PteridineGrade, purity and minimum order on request
    Price on request
    View
  • AChemBlock
    United States, HaywardUnclaimed profile
    PteridineGrade, purity and minimum order on request
    Price on request
    View
  • Apexmol
    China, ChongqingUnclaimed profile
    PteridineGrade, purity and minimum order on request
    Price on request
    View
  • Chemenu. Inc.
    China, ShanghaiUnclaimed profile
    PteridineGrade, purity and minimum order on request
    Price on request
    View
  • Innovapharm Ltd
    Ukraine, KievUnclaimed profile
    PteridineGrade, purity and minimum order on request
    Price on request
    View
  • Matrix Scientific
    United States, ElginUnclaimed profile
    PteridineGrade, purity and minimum order on request
    Price on request
    View

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

7 suppliers in 5 countries

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

Frequently asked questions

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

What is Pteridine?

Pteridine is a member of pteridines, a mancude organic heterobicyclic parent, an azaarene and an ortho-fused heteroarene.

What is the CAS number of Pteridine?

The CAS registry number of Pteridine is 91-18-9.

What is the molecular formula and weight of Pteridine?

The molecular formula of Pteridine is C6H4N4 and its molar mass is 132.13 g/mol.

What is Pteridine used for?

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

Is Pteridine hazardous?

No GHS hazard classification for Pteridine 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 Pteridine?

Pteridine 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 Pteridine?

CompoundList lists 7 suppliers of Pteridine in China, United States, Japan, Thailand and 1 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 Pteridine?

Suppliers quote Pteridine 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 Pteridine

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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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