Henan Tianfu Chemical Co., Ltd.
China
Product Name: 4-Aminopyridine
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Stocking Period: Inquiry
Contact: Anson
Email: info@tianfuchem.com

504-24-5

504-24-5 structure

Name: 4-AMINOPYRIDINE
Chemical Name: 4-aminopyridine
CAS Number: 504-24-5
Molecular Formula: C₅H₆N₂
Molecular Weight: 94.115
Catalog: Pharmaceutical intermediate Heterocyclic compound Pyridine compound Aminopyridine
Create Date: 2018-08-04 18:20:48
Modify Date: 2026-06-30 12:13:50
4-Aminopyridine is a nonselective K+ channel blocker that binds from the cytoplasmic side of the cell membrane.Target: Potassium Channel4-Aminopyridine(4AP) is a nonselective K+ channel blocker that binds from the cytoplasmic side of the cell membrane. 4AP strongly potentiates transmitter release from the unmyelinated terminals of rat motor nerves, and the possibility arose that demyelinated axon membrane, which can conduct impulses continuously like an unmyelinated fibre, might further resemble its unmyelinated terminals by responding to 4AP. In testing this hypothesis [1]. 4-AP blocked channels from the cytosolic face. 4-AP can both enhance and block Kv1.5 current and suggest that 4-AP can bind with different affinities to more than one site on Kv1.5 channels [2].

Name	4-aminopyridine
Synonyms	Prc 4-AMINO PYRIDINE GAMMA-PYRIDYLAMINE Rcra waste number P008 pyridin-4-amine p-amino pyridine 4-pyridinamine GAMMA-AMINOPYRIDINE vmi 4-Aminopyridine PA-AMINOPYRIDINE EINECS 207-987-9 p-Aminopyridine [UN2671] [Poison] 4-Aminopyridine(Toxic) 4-AMINOPYRIDINE PESTANAL AVITROL(R) 5-22-09-00106 (Beilstein Handbook Reference) TIMTEC-BB SBB004393 4-PyridinylaMine EL 970 pyridine,4-amino PYRIDIN-4-YLAMINE Prc 1237 Pyridine, 4-amino Pyridin-4-amin AMINOPYRIDINE, 4 4-pyridinylamine P-AMINO PYRIDINE 4-Pyridinamine, 4-Pyridylamine, Fampridine avitrol MFCD00006439 4-amino-pyridin Amino-4-pyridine 4-amino-pyridine avitrol200 Avitrol AMINOPYRIDINE, 4-(P) 4-Aminopyridine4-AP T6NJ DZ Neurelan AMINOPYRIDINE, 4-(RG) pyridine,4-amino-0 Phillips Ampydin 4APY Frampridine 4-AMINOPYRIDINE,REAGENT 4-Aminopyridine -5 Ampyra 4-pyridylamine pyridine,4-amino-000 Dalfampridine 4-Aminopyridine;4-AP; Pyridin-4-amine 4-AMINO PYRIDINE PYRIDIN-4-YLAMINE Pimadin (free base) PYRIDIN-4-AMINE FAMPRIDINE 4-Aminopyridine,4-Pyridinamine, 4-Pyridylamine, Fampridine 4-AMINOPYRIDINE INDUCES DOLIZATIO vmi10-3 Compound phillips1861 Fampridine γ-Pyridylamine p-Amino Pyridine 4-Amino Pyridine 4-AP 4-PYRIDYLAMINE AURORA KA-676 Fampridine, phma ade 4-Aminopyridine (RTC is agent for this item in Europe) mi-w-3 Pymadin AMpyra pyridin-4-yl-amine 4-Aminopyridine [-5] 4-Pyridinamine pyridine-4-amine

Description	4-Aminopyridine is a nonselective K+ channel blocker that binds from the cytoplasmic side of the cell membrane.Target: Potassium Channel4-Aminopyridine(4AP) is a nonselective K+ channel blocker that binds from the cytoplasmic side of the cell membrane. 4AP strongly potentiates transmitter release from the unmyelinated terminals of rat motor nerves, and the possibility arose that demyelinated axon membrane, which can conduct impulses continuously like an unmyelinated fibre, might further resemble its unmyelinated terminals by responding to 4AP. In testing this hypothesis [1]. 4-AP blocked channels from the cytosolic face. 4-AP can both enhance and block Kv1.5 current and suggest that 4-AP can bind with different affinities to more than one site on Kv1.5 channels [2].
Related Catalog	Signaling Pathways >> Membrane Transporter/Ion Channel >> Potassium Channel Research Areas >> Others
References	[1]. Sherratt, R.M., H. Bostock, and T.A. Sears, Effects of 4-aminopyridine on normal and demyelinated mammalian nerve fibres. Nature, 1980. 283(5747): p. 570-2. [2]. Bouchard, R. and D. Fedida, Closed- and open-state binding of 4-aminopyridine to the cloned human potassium channel Kv1.5. J Pharmacol Exp Ther, 1995. 275(2): p. 864-76.

Density	1.1±0.1 g/cm3
Boiling Point	192.7±40.0 °C at 760 mmHg
Melting Point	157 °C
Molecular Formula	C₅H₆N₂
Molecular Weight	94.115
Flash Point	70.3±27.3 °C
Exact Mass	94.053101
PSA	38.91000
LogP	-2.24
Vapour Pressure	0.5±0.4 mmHg at 25°C
Index of Refraction	1.569

CHEMICAL IDENTIFICATION

RTECS NUMBER :: US1750000

CHEMICAL NAME :: Pyridine, 4-amino-

CAS REGISTRY NUMBER :: 504-24-5

BEILSTEIN REFERENCE NO. :: 0105782

LAST UPDATED :: 199710

DATA ITEMS CITED :: 23

MOLECULAR FORMULA :: C5-H6-N2

MOLECULAR WEIGHT :: 94.13

WISWESSER LINE NOTATION :: T6NJ DZ

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Human - man

DOSE/DURATION :: 590 ug/kg

TOXIC EFFECTS :: Behavioral - hallucinations, distorted perceptions Lungs, Thorax, or Respiration - dyspnea Gastrointestinal - nausea or vomiting

REFERENCE :: CTOXAO Clinical Toxicology. (New York, NY) V.1-18, 1968-81. For publisher information, see JTCTDW. Volume(issue)/page/year: 16,487,1980

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Human - woman

DOSE/DURATION :: 120 ug/kg

TOXIC EFFECTS :: Behavioral - convulsions or effect on seizure threshold

REFERENCE :: JTCTDW Journal of Toxicology, Clinical Toxicology. (Marcel Dekker, 270 Madison Ave., New York, NY 10016) V.19- 1982- Volume(issue)/page/year: 32,583,1994

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 21 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: JTCEEM Journal de Toxicologie Clinique et Experimentale. (SPPIF, B.P.22, F-41353 Vineuil, France) V.5- 1985- Volume(issue)/page/year: 6(3),175,1986

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 6500 ug/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 26,532,1973

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 19 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: EKMMA8 Eksperimentalna Meditsina i Morfologiya. (Hemus, Blvd. Russki 6, Sofia, Bulgaria) V.1- 1962- Volume(issue)/page/year: 11,162,1972

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 19 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 57(9-10),64,1992

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 10 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: JMCMAR Journal of Medicinal Chemistry. (American Chemical Soc., Distribution Office Dept. 223, POB POB 57136, West End Stn., Washington, DC 20037) V.6- 1963- Volume(issue)/page/year: 8,296,1965

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 5 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: AEPPAE Naunyn-Schmiedeberg's Archiv fuer Experimentelle Pathologie und Pharmakologie. (Berlin, Ger.) V.110-253, 1925-66. For publisher information, see NSAPCC. Volume(issue)/page/year: 226,163,1955

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 7 mg/kg

TOXIC EFFECTS :: Behavioral - convulsions or effect on seizure threshold

REFERENCE :: APFRAD Annales Pharmaceutiques Francaises. (SPPIF, B.P.22, F-41353 Vineuil, France) V.1- 1943- Volume(issue)/page/year: 26,345,1968

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intracerebral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 4 mg/kg

TOXIC EFFECTS :: Behavioral - convulsions or effect on seizure threshold

REFERENCE :: AJEBAK Australian Journal of Experimental Biology and Medical Science. (Adelaide, S.A., Australia) V.1-64, 1924-86. Volume(issue)/page/year: 36,365,1958

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Mammal - dog

DOSE/DURATION :: 3700 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 26,532,1973

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: 5500 ug/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: EKMMA8 Eksperimentalna Meditsina i Morfologiya. (Hemus, Blvd. Russki 6, Sofia, Bulgaria) V.1- 1962- Volume(issue)/page/year: 11,162,1972

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - pigeon

DOSE/DURATION :: 6 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: JWMAA9 Journal of Wildlife Management. (Wildlife Soc., 5410 Grosvenor Lane, Bethesda, MD 20814) V.1- 1937- Volume(issue)/page/year: 29,830,1965

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - quail

DOSE/DURATION :: 7650 ug/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ASTTA8 ASTM Special Technical Publication. (American Soc. for Testing Materials, 1916 Race St., Philadelphia, PA 19103) No.1- 1911- Volume(issue)/page/year: (680),157,1979

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - duck

DOSE/DURATION :: 4200 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 21,315,1972

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - wild bird species

DOSE/DURATION :: 2370 ug/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: ASTTA8 ASTM Special Technical Publication. (American Soc. for Testing Materials, 1916 Race St., Philadelphia, PA 19103) No.1- 1911- Volume(issue)/page/year: (680),157,1979 *** REVIEWS *** TOXICOLOGY REVIEW TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 26,532,1973 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X4032 No. of Facilities: 452 (estimated) No. of Industries: 3 No. of Occupations: 3 No. of Employees: 4618 (estimated)

Symbol	GHS06
Signal Word	Danger
Hazard Statements	H300-H315-H319-H335
Precautionary Statements	P261-P264-P301 + P310-P305 + P351 + P338
Personal Protective Equipment	dust mask type N95 (US);Eyeshields;Faceshields;Gloves;type P2 (EN 143) respirator cartridges
Hazard Codes	T+:Verytoxic;
Risk Phrases	R28;R36/37/38
Safety Phrases	S26-S36/37/39-S45-S60-S61-S37/39-S28A-S1
RIDADR	UN 2671 6.1/PG 2
WGK Germany	3
RTECS	US1750000
Packaging Group	II
Hazard Class	6.1
HS Code	2933399090

Precursor 10
1124-33-0 3535-75-9 100-48-1 1120-87-2
98400-69-2 13556-71-3 15854-87-2 626-64-2
872-50-4 7462-74-0
DownStream 10
105364-26-9 33399-46-1 313516-66-4 31793-29-0
143094-26-2 145255-15-8 42373-30-8 4318-68-7
22581-72-2 207855-09-2

HS Code	2933399090
Summary	2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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