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Sigma-Aldrich

4-Aminopyridine

≥99%

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Synonym(s):
4-Pyridinamine, 4-Pyridylamine, 4AP, Fampridine
Empirical Formula (Hill Notation):
C5H6N2
CAS Number:
504-24-5
Molecular Weight:
94.11
Beilstein:
105782
EC Number:
207-987-9
MDL number:
MFCD00006439
PubChem Substance ID:
24856677
NACRES:
NA.22

Quality Level

100

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

Gene Information

human ... KCNA1(3736) , KCNA10(3744) , KCNA2(3737) , KCNA3(3738) , KCNA4(3739) , KCNA5(3741) , KCNA6(3742) , KCNA7(3743) , KCNB1(3745) , KCNB2(9312) , KCNC1(3746) , KCNC2(3747) , KCNC3(3748) , KCNC4(3749) , KCND1(3750) , KCND2(3751) , KCND3(3752) , KCNF1(3754) , KCNG1(3755) , KCNG2(26251) , KCNG3(170850) , KCNG4(93107) , KCNH1(3756) , KCNH2(3757) , KCNH3(23416) , KCNH4(23415) , KCNH5(27133) , KCNH6(81033) , KCNH7(90134) , KCNH8(131096) , KCNQ1(3784) , KCNQ2(3785) , KCNQ3(3786) , KCNQ4(9132) , KCNQ5(56479) , KCNS1(3787) , KCNS2(3788) , KCNS3(3790) , KCNV1(27012) , KCNV2(169522)
mouse ... Kcna3(16491)
rat ... Grin2a(24409)

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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.

Signal Word

Danger

Hazard Classifications

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

Storage Class Code

6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(F)

312.8 °F

Flash Point(C)

156 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

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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)
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
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)
Maxime Lévesque et al.
Epilepsia, 54(4), 596-604 (2013-03-26)
The K(+) channel blocker 4-aminopyridine (4AP) induces epileptiform synchronization in brain slices maintained in vitro without interfering with γ-aminobutyric acid (GABA)A receptor-mediated inhibition and, actually, even enhancing it. The hypothesis that similar electrographic epileptiform patterns occur in vivo following systemic
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