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Heterocyclic building blocks

Cinnoline

Also known as 1,2-Benzodiazine, benzopyridazine, Benzo[c]pyridazine

CAS 253-66-7Formula C8H6N2Molar mass 130.15 g/molEC 205-964-8
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Cinnoline chemical structure, C8H6N2, CAS 253-66-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
253-66-7
Formula
C8H6N2
Molar mass
130.15 g/mol
EC number
205-964-8
HS code
293399
Category
Heterocyclic building blocks

What is Cinnoline?

Plain description, key identifiers and synonyms

Cinnoline is an azaarene that is the 1,2-diaza analogue of naphthalene. The parent of the class of cinnolines. It is a mancude organic heterobicyclic parent, a member of cinnolines, an azaarene and an ortho-fused heteroarene.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
cinnoline
CAS number
253-66-7 CAS number cross-checked
EC number
205-964-8
Molecular formula
C8H6N2
UNII
N5KD6I506O
MDL number
MFCD00006812
InChIKey
WCZVZNOTHYJIEI-UHFFFAOYSA-N
InChI
InChI=1S/C8H6N2/c1-2-4-8-7(3-1)5-6-9-10-8/h1-6H
SMILES (canonical and isomeric)
C1=CC=C2C(=C1)C=CN=N2

Synonyms

  • 1,2-Benzodiazine
  • benzopyridazine
  • Benzo[c]pyridazine
  • 1,2-Diazanaphthalene
  • alpha-Phenodiazine
  • Benzo(c)pyridazine
  • US12338238, Example 43

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
130.15 g/molcalc.
Exact mass
130.0531 Dacalc.
LogP (octanol/water)
1.63calc.
Topological polar surface area
25.78 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
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, c1ccc2nnccc2c1

c1ccc2nnccc2c1

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

502 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.

Cinnoline suppliers

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

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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Cinnoline 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 Cinnoline is traded under.

HS 2933.99Indicative HS code

Heterocyclic compounds with nitrogen hetero-atom(s) only, other

World exports in 2024
$12.1B
−31.0% vs 2023, imports $28.8B
2019 to 2024
Top exporters
  1. China30.5%
  2. India * partner reported16.3%
  3. Ireland9.0%
Top importers
  1. Slovenia31.7%
  2. Italy24.2%
  3. United States5.0%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Cinnoline?

Cinnoline is an azaarene that is the 1,2-diaza analogue of naphthalene. The parent of the class of cinnolines. It is a mancude organic heterobicyclic parent, a member of cinnolines, an azaarene and an ortho-fused heteroarene.

What is the CAS number of Cinnoline?

The CAS registry number of Cinnoline is 253-66-7.

What is the molecular formula and weight of Cinnoline?

The molecular formula of Cinnoline is C8H6N2 and its molar mass is 130.15 g/mol.

What is Cinnoline used for?

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

Is Cinnoline hazardous?

No GHS hazard classification for Cinnoline 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 Cinnoline?

Cinnoline is usually classified under HS code 293399 (Heterocyclic compounds with nitrogen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Cinnoline?

CompoundList lists 2 suppliers of Cinnoline in Australia and 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 Cinnoline?

Suppliers quote Cinnoline 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 Cinnoline

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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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