pyridine oxide

Modify Date: 2026-07-01 16:46:36

pyridine oxide Structure
pyridine oxide structure
Common Name pyridine oxide
CAS Number 694-59-7 Molecular Weight 95.099
Density 1.0±0.1 g/cm3 Boiling Point 270.0±9.0 °C at 760 mmHg
Molecular Formula C5H5NO Melting Point 62-67 °C(lit.)
MSDS Chinese USA Flash Point 117.1±18.7 °C
Symbol GHS07
GHS07
Signal Word Warning

 Names

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name pyridine N-oxide
Synonym More Synonyms

 Chemical & Physical Properties

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density 1.0±0.1 g/cm3
Boiling Point 270.0±9.0 °C at 760 mmHg
Melting Point 62-67 °C(lit.)
Molecular Formula C5H5NO
Molecular Weight 95.099
Flash Point 117.1±18.7 °C
Exact Mass 95.037117
PSA 25.46000
LogP -1.20
Vapour Pressure 0.0±0.5 mmHg at 25°C
Index of Refraction 1.517
InChIKey ILVXOBCQQYKLDS-UHFFFAOYSA-N
SMILES [O-][n+]1ccccc1
Storage condition 2-8°C
Water Solubility soluble

 MSDS

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

 Toxicological Information

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

CHEMICAL IDENTIFICATION

RTECS NUMBER :
UT6410000
CHEMICAL NAME :
Pyridine-1-oxide
CAS REGISTRY NUMBER :
694-59-7
LAST UPDATED :
199701
DATA ITEMS CITED :
8
MOLECULAR FORMULA :
C5-H5-N-O
MOLECULAR WEIGHT :
95.11
WISWESSER LINE NOTATION :
T6NJ AO

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1425 mg/kg
TOXIC EFFECTS :
Nutritional and Gross Metabolic - weight loss or decreased weight gain Nutritional and Gross Metabolic - body temperature decrease
REFERENCE :
JPPMAB Journal of Pharmacy and Pharmacology. (Pharmaceutical Soc. of Great Britain, 1 Lambeth High St., London SEI 7JN, UK) V.1- 1949- Volume(issue)/page/year: 16,472,1964
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
180 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#04070
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Bird - quail
DOSE/DURATION :
1 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
JRPFA4 Journal of Reproduction and Fertility. (Biochemical Soc. Book Depot, POB 32, Commerce Way, Colchester, Essex CO2 8HP, UK) V.1- 1960- Volume(issue)/page/year: 48,371,1976
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Bird - wild bird species
DOSE/DURATION :
1 gm/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
AECTCV Archives of Environmental Contamination and Toxicology. (Springer-Verlag New York, Inc., Service Center, 44 Hartz Way, Secaucus, NJ 070944) V.1- 1973- Volume(issue)/page/year: 12,355,1983 ** OTHER MULTIPLE DOSE TOXICITY DATA **
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
594 mg/kg/5D-I
TOXIC EFFECTS :
Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol) Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - other Enzymes
REFERENCE :
TOLED5 Toxicology Letters. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1977- Volume(issue)/page/year: 85,173,1996

 Safety Information

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H315-H319-H335
Precautionary Statements P261-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes Xn: Harmful;Xi: Irritant;
Risk Phrases R36/37/38
Safety Phrases S26-S24/25-S37/39
RIDADR NONH for all modes of transport
WGK Germany 3
RTECS UT6410000
HS Code 29333999

 Synthetic Route

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

 Customs

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code 29333999

 Articles33

More Articles

This table lists relevant public references with title, journal and publication metadata for this compound.

Phosphodiesterases in the rat ovary: effect of cAMP in primordial follicles.

Reproduction 150 , 11-20, (2015)

Phosphodiesterases (PDEs) are important regulators of the intracellular cAMP concentration, which is a central second messenger that affects a multitude of intracellular functions. In the ovaries, cAM...

Effects of metal pyrithione antifoulants on freshwater macrophyte Lemna gibba G3 determined by image analysis.

Ecotoxicology 21(4) , 1102-11, (2012)

Copper pyrithione (CuPT(2)) and zinc pyrithione (ZnPT(2)) are two popular antifouling agents that prevent biofouling. Research into the environmental effects of metal pyrithiones has mainly focused on...

General and mild preparation of 2-aminopyridines.

Org. Lett. 12(22) , 5254-7, (2010)

A general and facile one-pot amination procedure for the synthesis of 2-aminopyridines from the corresponding pyridine-N-oxides is presented as a mild alternative to S(N)Ar chemistry. A variety of ami...

 pyridine oxideBioassay

View more

This table contains target information, in‑vitro & in‑vivo assay data for this compound.

Name: Octanol-water partition coefficient, log P of the compound
Source: ChEMBL
Target: N/A
External Id: CHEMBL3285886
Total 1, Current Page 1 of 1
1

 Synonyms

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

Pyridine 1-oxide
Pyridine-N-Oxidee
EINECS 211-774-6
Pyridine, 1-oxide
Pyridne-N-Oxide
Pyridine N-oxide
Pyridin-N-oxid
Pyridine-N-Oxide
PyridineN-oxide
MFCD00006194
3-PICOLIN-N-OXIDE
pyridine oxide
1-oxidePyridine
pyridinyl-N-oxide

 pyridine oxide | FAQ

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What is the melting point of pyridine N-oxide?
A: Melting point of pyridine N-oxide is 62-67 °C(lit.).
Q: What is the molecular formula of pyridine N-oxide?
A: Molecular formula of pyridine N-oxide is C5H5NO.
Q: What are the downstream products of pyridine N-oxide?
A: Related downstream products(CAS) of pyridine N-oxide: 32111-34-5;33399-46-1;5153-63-9;33421-43-1;3480-65-7;39182-28-0;4377-33-7;14474-56-7;107-49-3;145083-64-3.
Q: What are the storage conditions for pyridine N-oxide?
A: Storage conditions for pyridine N-oxide: 2-8°C.
Q: What English synonyms does pyridine N-oxide have?
A: English synonyms of pyridine N-oxide: Pyridine 1-oxide, Pyridine-N-Oxidee, EINECS 211-774-6, Pyridine, 1-oxide, Pyridne-N-Oxide, Pyridine N-oxide, Pyridin-N-oxid, Pyridine-N-Oxide, PyridineN-oxide, MFCD00006194, 3-PICOLIN-N-OXIDE, pyridine oxide, 1-oxidePyridine, pyridinyl-N-oxide.
Q: What is the safety information for pyridine N-oxide?
A: Safety information for pyridine N-oxide: S26-S24/25-S37/39.
Q: What is the LogP of pyridine N-oxide?
A: LogP of pyridine N-oxide is -1.20.
Q: What is the CAS number of pyridine N-oxide?
A: CAS number of pyridine N-oxide is 694-59-7.
Q: What is the InChIKey of pyridine N-oxide?
A: InChIKey of pyridine N-oxide is ILVXOBCQQYKLDS-UHFFFAOYSA-N.
Q: What are the upstream materials of pyridine N-oxide?
A: Related upstream materials(CAS) of pyridine N-oxide: 110-86-1;98-98-6;21275-87-6;336-64-1;1121-76-2;824-40-8;2311-91-3;94-36-0;32709-07-2.

 pyridine oxidefactory

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd
Dayang Chem (Hangzhou) Co., Ltd.
Henan Tianfu Chemical Co., Ltd.
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