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Heterocyclic building blocks

Isonicotinohydroxamic acid

Also known as Isonicotinylhydroxamic acid, N-Hydroxy-4-pyridinecarboxamide, 4-Pyridinecarboxamide, N-hydroxy-

CAS 4427-22-9Formula C6H6N2O2Molar mass 138.13 g/mol
1 supplier listed
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Isonicotinohydroxamic acid chemical structure, C6H6N2O2, CAS 4427-22-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
4427-22-9
Formula
C6H6N2O2
Molar mass
138.13 g/mol
HS code
293339
Category
Heterocyclic building blocks

What is Isonicotinohydroxamic acid?

Plain description, key identifiers and synonyms

N-hydroxy-4-pyridinecarboxamide is a pyridinecarboxamide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
N-hydroxypyridine-4-carboxamide
CAS number
4427-22-9 CAS number cross-checked
Molecular formula
C6H6N2O2
UNII
F0UQ8FE3Y1
MDL number
MFCD01717752
InChIKey
HZNTVAYNXKPCFK-UHFFFAOYSA-N
InChI
InChI=1S/C6H6N2O2/c9-6(8-10)5-1-3-7-4-2-5/h1-4,10H,(H,8,9)
SMILES (canonical and isomeric)
C1=CN=CC=C1C(=O)NO

Synonyms

  • Isonicotinylhydroxamic acid
  • N-Hydroxy-4-pyridinecarboxamide
  • 4-Pyridinecarboxamide, N-hydroxy-
  • N-Hydroxyisonicotinamide
  • N-hydroxypyridine-4-carboxamide
  • Pyridine-4-carbohydroxamic acid
  • 4-Pyridinecarbohydroxamic acid
  • 4-Pyridinecarboxamide,N-hydroxy-(9CI)
  • 4-Pyridinecarbohydroximic acid
  • 4-pyridinecarbohydroxamic
  • N-hydroxy isonicotinamide
  • 4-Pyridinehydroxamic acid
  • N-Hydroxyisonicotinamide #
  • 4-Picolinehydroxamic acid
  • Pyridine-4-carboxamide, N-hydroxy-
  • Pyridinium-4-hydroxamic acid

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
138.13 g/molcalc.
Exact mass
138.0429 Dacalc.
LogP (octanol/water)
0.2calc.
Topological polar surface area
62.22 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
1calc.
Heavy atoms
10calc.
Rings
1calc.
Aromatic rings
1calc.
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, c1ccncc1

c1ccncc1

1 ring, 6 atoms, the Pyridine ring system.

118,162 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.

Isonicotinohydroxamic acid suppliers

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Where suppliers are based

1 supplier in 1 country

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Isonicotinohydroxamic acid 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 Isonicotinohydroxamic acid is traded under.

HS 2933.39Indicative HS code

Heterocyclic compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure…

World exports in 2024
$9.16B
−17.9% vs 2023, imports $10.6B
2019 to 2024
Top exporters
  1. China21.5%
  2. India * partner reported12.3%
  3. Ireland11.6%
Top importers
  1. Germany14.2%
  2. United States12.8%
  3. Brazil10.1%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Isonicotinohydroxamic acid, based on the data on this page

What is Isonicotinohydroxamic acid?

N-hydroxy-4-pyridinecarboxamide is a pyridinecarboxamide.

What is the CAS number of Isonicotinohydroxamic acid?

The CAS registry number of Isonicotinohydroxamic acid is 4427-22-9.

What is the molecular formula and weight of Isonicotinohydroxamic acid?

The molecular formula of Isonicotinohydroxamic acid is C6H6N2O2 and its molar mass is 138.13 g/mol.

What is Isonicotinohydroxamic acid used for?

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

Is Isonicotinohydroxamic acid hazardous?

No GHS hazard classification for Isonicotinohydroxamic acid 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 Isonicotinohydroxamic acid?

Isonicotinohydroxamic acid is usually classified under HS code 293339 (Compounds containing an unfused pyridine ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Isonicotinohydroxamic acid?

CompoundList lists 1 supplier of Isonicotinohydroxamic acid in Australia. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Isonicotinohydroxamic acid?

Suppliers quote Isonicotinohydroxamic acid 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 Isonicotinohydroxamic acid

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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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