MilliporeSigma
All Photos(1)

Documents

275875

Sigma-Aldrich

4-Aminopyridine

≥99%

Sign Into View Organizational & Contract Pricing

Synonym(s):
4-Pyridinamine, 4-Pyridylamine, 4AP, Fampridine
Empirical Formula (Hill Notation):
C5H6N2
CAS Number:
Molecular Weight:
94.11
Beilstein/REAXYS Number:
105782
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

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

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
A784038.011111162454
vibrant-m

275875

4-Aminopyridine

vibrant-m

A78403

4-Aminopyridine

vibrant-m

8.01111

4-Aminopyridine

vibrant-m

1162454

Dalfampridine

Quality Level

100

Quality Level

200

Quality Level

200

Quality Level

-

assay

≥99%

assay

98%

assay

≥98.0% (GC)

assay

-

form

solid

form

crystals

form

crystals

form

-

bp

273 °C (lit.)

bp

273 °C (lit.)

bp

274 °C/1013 hPa

bp

273 °C (lit.)

mp

155-158 °C (lit.)

mp

155-158 °C (lit.)

mp

157-160 °C

mp

155-158 °C (lit.)

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.

signalword

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

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

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)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

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
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)
4-Aminopyridine derivatives with antiamnesic activity
Andreani A, et al.
European Journal of Medicinal Chemistry, 35(1), 77-82 (2000)
Silvia Ghirga et al.
Journal of the Optical Society of America. A, Optics, image science, and vision, 37(4), 643-652 (2020-05-14)
It has been recently demonstrated that the exposure of naive neuronal cells to light-at the basis of optogenetic techniques and calcium imaging measurements-may alter neuronal firing. Indeed, understanding the effect of light on nongenetically modified neurons is crucial for a

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service