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Heterocyclic building blocks

Azure C cation

Also known as N-Methylthionine, Phenothiazin-5-ium, 3-amino-7-(methylamino)-, azure C(1+)

CAS 30719-07-4Formula C13H12N3S+Molar mass 242.33 g/mol
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Azure C cation chemical structure, C13H12N3S+, CAS 30719-07-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
30719-07-4
Formula
C13H12N3S+
Molar mass
242.33 g/mol
HS code
293430
Category
Heterocyclic building blocks

What is Azure C cation?

Plain description, key identifiers and synonyms

3-amino-7-(methylamino)phenothiazin-5-ium is an organic cation that is phenothiazin-5-ium substituted by amino and methylamino groups at positions 3 and 7 respectively. The chloride salt is the histological dye 'azure C'.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
7-methyliminophenothiazin-10-ium-3-amine
CAS number
30719-07-4
Molecular formula
C13H12N3S+
UNII
U7QGP6B2DS
InChIKey
QFYWEMZCVYRHJE-UHFFFAOYSA-O
InChI
InChI=1S/C13H11N3S/c1-15-9-3-5-11-13(7-9)17-12-6-8(14)2-4-10(12)16-11/h2-7H,14H2,1H3/p+1
SMILES (canonical and isomeric)
CN=C1C=CC2=[NH+]C3=C(C=C(C=C3)N)SC2=C1

Synonyms

  • N-Methylthionine
  • Phenothiazin-5-ium, 3-amino-7-(methylamino)-
  • azure C(1+)
  • 3-amino-7-(methylamino)phenothiazin-5-ium
  • Azure C (13)

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
242.33 g/molcalc.
Exact mass
242.0746 Dacalc.
LogP (octanol/water)
1.93calc.
Topological polar surface area
52.52 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
0calc.
Heavy atoms
17calc.
Rings
3calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.08calc.
Formal charge
1calc.
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, N=c1ccc2nc3ccccc3sc-2c1

N=c1ccc2nc3ccccc3sc-2c1

3 rings, 15 atoms.

21 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.

Azure C cation suppliers

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Azure C cation price

Indicative price range per kg from live supplier offers

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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 Azure C cation is traded under.

HS 2934.30Indicative HS code

Compounds containing in the structure a phenothiazine ring-system (whether or not…

World exports in 2024
$89.3M
−7.1% vs 2023, imports $97M
2019 to 2024
Top exporters
  1. Germany21.6%
  2. France * partner reported14.6%
  3. China13.0%
Top importers
  1. United States14.2%
  2. Brazil12.7%
  3. India * partner reported10.6%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Azure C cation, based on the data on this page

What is Azure C cation?

3-amino-7-(methylamino)phenothiazin-5-ium is an organic cation that is phenothiazin-5-ium substituted by amino and methylamino groups at positions 3 and 7 respectively. The chloride salt is the histological dye 'azure C'.

What is the CAS number of Azure C cation?

The CAS registry number of Azure C cation is 30719-07-4.

What is the molecular formula and weight of Azure C cation?

The molecular formula of Azure C cation is C13H12N3S+ and its molar mass is 242.33 g/mol.

What is Azure C cation used for?

Known uses and roles of Azure C cation include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Azure C cation hazardous?

No GHS hazard classification for Azure C cation 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 Azure C cation?

Azure C cation is usually classified under HS code 293430 (Compounds containing in the structure a phenothiazine ring-system (whether or not…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Azure C cation?

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What is the price of Azure C cation?

Suppliers quote Azure C cation 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 Azure C cation

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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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