Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 2-Hydroxypyridine
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Purity: 98.0%
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Henan Tianfu Chemical Co., Ltd.
China
Product Name: pyridin-2-ol
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Zhongshan Xingrui Chemical Co. , Ltd.
China
Product Name: 2-pyridone
Price: ￥Inquiry/25kg
Purity: 99.0%
Stocking Period: Inquiry
Contact: Wang Jie
Email: 3096638339@qq.com

142-08-5

142-08-5 structure

142-08-5 structure

Name: 2-pyridone
Chemical Name: pyridin-2-ol
CAS Number: 142-08-5
Molecular Formula: C₅H₅NO
Molecular Weight: 95.099
Catalog: Pharmaceutical intermediate Heterocyclic compound Pyridine compound Hydroxypyridine
Create Date: 2018-06-14 23:51:50
Modify Date: 2026-07-01 11:01:09

Name	pyridin-2-ol
Synonyms	pyridinyl-6'-ol 2-hydroxypyridine (intermediate of benzoxazole) 2-oxypyridine 2(1h)-pyridinone 2-hydroxy-pyridine Levetiracetam Impurity 3（Levetiracetam Impurity C） 2-Hydroxypyridine> 2-pyridinone EINECS 205-520-3 2-Pyridinol (2-hydroxy-pyridin) 2-pyridinol AURORA KA-3075 2-pyridone A-PYRIDONE 2-Pyridinol 2-Pyridone TIMTEC-BB SBB004392 Levetiracetam impurities520 2-HYDROXYPYRIDINE (2(1H)-Pyridinol) Levetiracetam-3 A-PYRIDONE 1-Hydroxy-2-pyridine 3-Fluoro-4-Methylbenzenethiol Diydrozylpyridine 2-Hydroxypyridine ISO 9001：2015 REACH 2(1H)-PYRIDONE Pyridone-2 2(1H)-Pyridinone 2-Oxopyridine 1,2-dihydro-2-oxopyridine Levetiracetam impurities12 α-Pyridone, 10 mM in DMSO α-Pyridone (Levetiracetam Impurity) Levetiracetam Impurity C alpha-Pyridone Pyridin-2(1H)-one 2-hydroxypyridate pyridone 2-Hydroxypyridine 2-HYDROXYPYRIDINE MFCD00006268 1h-pyridin-2-one 2-Pyridinol Pyridin-2-one pyridinol 2-PYRIDON 2(1H)-Pyridone Levetiracetam impurity C CRS 2-PYRIDONE 2-Hydroxypyridine(2-Pyridinol) 2-PYRIDOL 2-oxopyridine α-Pyridone pyridinone 2(1H)-Pyridone, 2-Pyridinol a-Hydroxypyridine Pyridinone 1H-2-Pyridone

Density	1.1±0.1 g/cm3
Boiling Point	323.7±15.0 °C at 760 mmHg
Melting Point	105-107 °C(lit.)
Molecular Formula	C₅H₅NO
Molecular Weight	95.099
Flash Point	181.1±5.3 °C
Exact Mass	95.037117
PSA	33.12000
LogP	-0.58
Vapour Pressure	0.0±0.7 mmHg at 25°C
Index of Refraction	1.514
Storage condition	Store at RT.

CHEMICAL IDENTIFICATION

RTECS NUMBER :: UV1144050

CHEMICAL NAME :: 2(1H)-Pyridone

CAS REGISTRY NUMBER :: 142-08-5

LAST UPDATED :: 199701

DATA ITEMS CITED :: 4

MOLECULAR FORMULA :: C5-H5-N-O

MOLECULAR WEIGHT :: 95.11

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 :: 410 mg/kg

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

REFERENCE :: TOXIA6 Toxicon. (Pergamon Press Ltd., Headington Hill Hall, Oxford OX3 OBW, UK) V.1- 1962- Volume(issue)/page/year: 23,815,1985

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

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 750 mg/kg

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

REFERENCE :: AIPTAK Archives Internationales de Pharmacodynamie et de Therapie. (Heymans Institute of Pharmacology, De Pintelaan 185, B-9000 Ghent, Belgium) V.4- 1898- Volume(issue)/page/year: 93,143,1953 ** 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 :: 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

Symbol	GHS06
Signal Word	Danger
Hazard Statements	H301-H315-H319-H335
Precautionary Statements	Missing Phrase - N15.00950417-P305 + P351 + P338
Personal Protective Equipment	Eyeshields;Faceshields;Gloves;type P2 (EN 143) respirator cartridges
Hazard Codes	Xi:Irritant;
Risk Phrases	R36/37/38
Safety Phrases	S26-S36-S37/39
RIDADR	UN2811
WGK Germany	3
RTECS	UV1144050
Packaging Group	III
Hazard Class	6.1
HS Code	2933399090

Precursor 10
13161-30-3 40673-25-4 109-04-6 1212-29-9
1628-89-3 120-57-0 1219454-89-3 123-11-5
66-99-9 100-10-7
DownStream 10
108664-25-1 104940-96-7 104941-02-8 104941-03-9
104940-99-0 108664-23-9 32111-34-5 372-48-5
5006-66-6 58530-50-0

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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