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275875

Sigma-Aldrich

4-Aminopyridine

≥99%

Synonym(s):

4-Pyridinamine, 4-Pyridylamine, 4AP, Fampridine

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About This Item

Empirical Formula (Hill Notation):
C5H6N2
CAS Number:
Molecular Weight:
94.11
Beilstein/REAXYS Number:
105782
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

≥99%

form

solid

bp

273 °C (lit.)

mp

155-158 °C (lit.)

solubility

DMF: soluble(lit.)
DMSO: soluble(lit.)
THF: soluble(lit.)
acetone: soluble(lit.)
acetonitrile: soluble(lit.)
ethanol: soluble(lit.)
isopropanol: soluble(lit.)
methanol: soluble(lit.)
water: soluble(lit.)

SMILES string

Nc1ccncc1

InChI

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

InChI key

NUKYPUAOHBNCPY-UHFFFAOYSA-N

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General description

4-Aminopyridine (4-AP) blocks the voltage-dependent potassium channels in other nerve membranes. 4-AP is a K+ channel blocker and causes epileptiform activity in in vitro preparations and is a potent convulsant in animals and man.

Application

4-Aminopyridine can be used as:
  • A reactant to prepare pharmacologically important 4-amino-N-pyridin-4-yl-butyramide hydrochloride.
  • A reactant to prepare cinnamic acid derivatives as potent cholinesterase inhibitors.
  • A starting material to prepare aza analogs of batracylin, a topoisomerase II inhibitor.

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Danger

Hazard Classifications

Acute Tox. 2 Oral - Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1B

wgk_germany

WGK 3

flash_point_f

312.8 °F

flash_point_c

156 °C

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges


Certificates of Analysis (COA)

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S Yamaguchi et al.
Epilepsy research, 11(1), 9-16 (1992-03-01)
The K+ channel blocker 4-aminopyridine (4-AP) causes epileptiform activity in in vitro preparations and is a potent convulsant in animals and man. In mice, 4-AP produces behavioral activation, clonic limb movements and wild running, followed by tonic hindlimb extension and
Design, synthesis and evaluation of novel cinnamic acid derivatives bearing N-benzyl pyridinium moiety as multifunctional cholinesterase inhibitors for Alzheimer′s disease
Lan J-S, et al.
Journal of Enzyme Inhibition and Medicinal Chemistry, 32(1), 776-788 (2017)
H Bostock et al.
The Journal of physiology, 313, 301-315 (1981-01-01)
1. 4-Aminopyridine (4AP) and tetraethylammonium ions (TEA), which block voltage-dependent potassium channels in other nerve membranes, have been used to study nerve conduction in fibres of normal rat spinal roots and those demyelinated with diphtheria toxin. The pharmacological actions have
Synthesis of aza analogues of the anticancer agent batracylin
Martinez-Viturro CM and Dominguez D
Tetrahedron Letters, 48(27), 4707-4710 (2007)
4-Aminopyridine derivatives with antiamnesic activity
Andreani A, et al.
European Journal of Medicinal Chemistry, 35(1), 77-82 (2000)

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