4-Aminopyridine

C₅H₆N₂CAS 504-24-594.12 g/mol

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Properties

Molecular formula: C₅H₆N₂
Molar mass: 94.12 g/mol
Exact mass: 94.0531 Da
Density: 1.2607 g/mL (at 25.3 °C)
Melting point: 158.5 °C
Boiling point: 273 °C
pKa: 9.17
Flash point: 164.4 °C
Water solubility: 112 g/L (20 °C)
logP: 0.49Crippen estimate
Polar surface area: 39.6 Å²
H-bond donors / acceptors: 2 / 1
Rotatable bonds: 0

Hazards

Danger

H300 Fatal if swallowed98.8% of notifiers
H311 Toxic in contact with skin18.3% of notifiers
H315 Causes skin irritation87.8% of notifiers
H319 Causes serious eye irritation89% of notifiers
H335 May cause respiratory irritation82.9% of notifiers
H411 Toxic to aquatic life with long lasting effects26.8% of notifiers

Aggregated from 82 ECHA notifications, via PubChem; a share says how many notifiers assign that statement.

Precautionary statements

P261, P262, P264, P264+P265, P270, P271, P273, P280, P301+P316, P302+P352, P304+P340, P305+P351+P338, P316, P319, P321, P330, P332+P317, P337+P317, P361+P364, P362+P364, P391, P403+P233, P405, P501

Identifiers

CAS number

504-24-5

SMILES

N=c1cc[nH]cc1

InChIKey

NUKYPUAOHBNCPY-UHFFFAOYSA-N

InChI

InChI=1S/C5H6N2/c6-5-1-3-7-4-2-5/h1-4H,(H2,6,7)

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Names and synonyms

18 names · show all

4-Pyridinamine
Pyridine, 4-amino-
VMI 10-3
Phillips 1861
γ-Aminopyridine
p-Aminopyridine
4-Pyridylamine
Avitrol
EL 970
Fampridine
4-Pyridinylamine
4AP
NSC 15041
Neurelan
Ampyra
Dalfampridine
Pymadin
Fampyra

Safety data sheets

One stored sheet lists this compound in section 3, matched by the CAS number 504-24-5. Each row opens the sheet with its composition and PDF.

4-Aminopyridine ≤ 100 %Fisher Scientific · 2025-12-18

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Work with 4-Aminopyridine

Predict the NMR spectrum1H and 13C shifts with multiplicities Make a solutionWhat to weigh for any molarity and volume Check drug-likenessLipinski, Veber and lead-likeness Boiling point under vacuumAt any pressure, from its normal boiling point Isotope patternExact mass and the mass spectrum pattern

Similar compounds

4-Hydroxypyridine108-96-340 % similar 4-Amino-2-methylpyridine18437-58-640 % similar 4-Mercaptopyridine4556-23-440 % similar 3,4-Diaminopyridine54-96-640 % similar 4-Hydroxypyridine626-64-240 % similar 4-(Methylamino)pyridine1121-58-035 % similar 3-Methyl-4-pyridinamine1990-90-535 % similar 4-Amino-3-hydroxypyridine52334-53-935 % similar

Tanimoto similarity of circular fingerprints over the whole catalogue.

All similar compounds

Same formula

1-Vinylimidazole1072-63-5 Methylpyrazine109-08-0 4-Methylpyridazine1120-88-3 3-Methylpyridazine1632-76-4 5-Methylpyrimidine2036-41-1 4-Methylpyrimidine3438-46-8 3-Aminopyridine462-08-8 2-Aminopyridine504-29-0

Elsewhere

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